WO2005016522A1 - Immobilisierbare ruthenium-katalysatoren mit n-heterozyklischen carben-liganden - Google Patents
Immobilisierbare ruthenium-katalysatoren mit n-heterozyklischen carben-liganden Download PDFInfo
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- WO2005016522A1 WO2005016522A1 PCT/EP2004/007775 EP2004007775W WO2005016522A1 WO 2005016522 A1 WO2005016522 A1 WO 2005016522A1 EP 2004007775 W EP2004007775 W EP 2004007775W WO 2005016522 A1 WO2005016522 A1 WO 2005016522A1
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- ylidene
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- imidazolin
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- 0 *C1*(*N)C(*)=*(*)C1* Chemical compound *C1*(*N)C(*)=*(*)C1* 0.000 description 2
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- C07F—ACYCLIC, CARBOCYCLIC OR HETEROCYCLIC COMPOUNDS CONTAINING ELEMENTS OTHER THAN CARBON, HYDROGEN, HALOGEN, OXYGEN, NITROGEN, SULFUR, SELENIUM OR TELLURIUM
- C07F15/00—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table
- C07F15/0006—Compounds containing elements of Groups 8, 9, 10 or 18 of the Periodic Table compounds of the platinum group
- C07F15/0046—Ruthenium compounds
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/1608—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes the ligands containing silicon
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/22—Organic complexes
- B01J31/2265—Carbenes or carbynes, i.e.(image)
- B01J31/2269—Heterocyclic carbenes
- B01J31/2273—Heterocyclic carbenes with only nitrogen as heteroatomic ring members, e.g. 1,3-diarylimidazoline-2-ylidenes
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J31/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- B01J31/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- B01J31/24—Phosphines, i.e. phosphorus bonded to only carbon atoms, or to both carbon and hydrogen atoms, including e.g. sp2-hybridised phosphorus compounds such as phosphabenzene, phosphole or anionic phospholide ligands
- B01J31/2404—Cyclic ligands, including e.g. non-condensed polycyclic ligands, the phosphine-P atom being a ring member or a substituent on the ring
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- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C6/00—Preparation of hydrocarbons from hydrocarbons containing a different number of carbon atoms by redistribution reactions
- C07C6/02—Metathesis reactions at an unsaturated carbon-to-carbon bond
- C07C6/04—Metathesis reactions at an unsaturated carbon-to-carbon bond at a carbon-to-carbon double bond
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- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/30—Addition reactions at carbon centres, i.e. to either C-C or C-X multiple bonds
- B01J2231/32—Addition reactions to C=C or C-C triple bonds
- B01J2231/321—Hydroformylation, metalformylation, carbonylation or hydroaminomethylation
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- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
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- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/40—Substitution reactions at carbon centres, e.g. C-C or C-X, i.e. carbon-hetero atom, cross-coupling, C-H activation or ring-opening reactions
- B01J2231/42—Catalytic cross-coupling, i.e. connection of previously not connected C-atoms or C- and X-atoms without rearrangement
- B01J2231/4205—C-C cross-coupling, e.g. metal catalyzed or Friedel-Crafts type
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B01—PHYSICAL OR CHEMICAL PROCESSES OR APPARATUS IN GENERAL
- B01J—CHEMICAL OR PHYSICAL PROCESSES, e.g. CATALYSIS OR COLLOID CHEMISTRY; THEIR RELEVANT APPARATUS
- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/50—Redistribution or isomerisation reactions of C-C, C=C or C-C triple bonds
- B01J2231/54—Metathesis reactions, e.g. olefin metathesis
- B01J2231/543—Metathesis reactions, e.g. olefin metathesis alkene metathesis
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- B01J2231/00—Catalytic reactions performed with catalysts classified in B01J31/00
- B01J2231/60—Reduction reactions, e.g. hydrogenation
- B01J2231/64—Reductions in general of organic substrates, e.g. hydride reductions or hydrogenations
- B01J2231/641—Hydrogenation of organic substrates, i.e. H2 or H-transfer hydrogenations, e.g. Fischer-Tropsch processes
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- B—PERFORMING OPERATIONS; TRANSPORTING
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- B01J2531/00—Additional information regarding catalytic systems classified in B01J31/00
- B01J2531/80—Complexes comprising metals of Group VIII as the central metal
- B01J2531/82—Metals of the platinum group
- B01J2531/821—Ruthenium
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- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
- C07C2531/00—Catalysts comprising hydrides, coordination complexes or organic compounds
- C07C2531/16—Catalysts comprising hydrides, coordination complexes or organic compounds containing coordination complexes
- C07C2531/24—Phosphines
Definitions
- the invention relates to immobilizable ruthenium catalysts with N-heterocyclic carbene ligands of the general formulas (I) and (II),
- the invention further relates to the use of the compounds as starting materials for the preparation of the analog immobilized ruthenium catalysts with N-heterocyclic carbene ligands.
- ruthenium catalysts with N-heterocyclic carbene ligands are described, for example, in WO 00/15339, WO 00/71554, WO 99/51344, EP 0721953 and e.g. in Chem. Eur. J. 2001, 7, 3236; J. Am. Chem. Soc. 1999, 121, 2674; Organic Letters 1999, 1 (6), 953 and in J. Organomet. Chem. 2000, 606, 49.
- the substituents on the two nitrogen atoms consist of pure hydrocarbon radicals, which do not lead to immobilization of the
- the immobilization method is very complex and the catalyst is separated from the inorganic oxide by an organic copolymer, which means that it is ultimately immobilized on an organic support.
- Hoveyda et al. report in Angew. Chem. 2001, 113, 4381 on the immobilization of a ruthenium catalyst with an N-heterocyclic carbene ligand on an oxide material with a smaller linker.
- the catalyst is anchored via the benzylidene ligand.
- the bond between the benzylidene ligand and the ruthenium center is released, causing the
- Catalyst is dissolved from the support and passes into the reaction solution. This leads to a high loss of catalyst on the support (high catalyst leaching), which makes reuse with sufficient sales impossible.
- the object of the present invention was to make ruthenium catalysts immobilizable on inorganic oxides accessible with N-heterocyclic carbene ligands. These compounds should be able to be produced in a simple manner, be covalently bonded to an inorganic support and in a sufficiently large amount on the support surface are available for application reactions. They should be firmly anchored to the surface and should not show any catalyst leaching.
- Cycloalkyl radical a CH 2 or CH group can be replaced by N, NH, NA, O and / or S and H atoms by OA, NA 2 and / or PA 2 ,
- Ar is one or more substituted or unsubstituted phenyl
- Het is a mononuclear or dinuclear saturated or unsaturated or aromatic heterocycle having 1 to 4 N, O and / or S atoms, which is unsubstituted or mono-, di- or triple by shark and / or
- R1 and R2 independently of one another are H, Z, Hai or A, Ar, AAr, Het, AHet with 1-18 C atoms, in which the radical A not bound to Ar or Het is an unsubstituted or substituted alkyl or one or more Z groups Is cycloalkyl, and Ar is unsubstituted or an aromatic hydrocarbon R4 A, Ar, AAr with 1-30 C atoms which is substituted one or more times by a group Z.
- R5, R6 independently of one another are H, A or Ar, where H atoms in A or Ar can be substituted by alkenyl or alkynyl radicals, with not more than 30 C atoms, with shark F, Cl, Br or I,
- X are identical or different from one another anionic ligands, each of which forms a ligand bond to Ru and n is 0, 1, 2.
- the present invention relates in particular to a process for the preparation of compounds of the general formulas (I) and (II), in which an alkoxysilyl-functionalized imidazolium salt of the general formula (III)
- R, R ', R1, R2 and R3 can have the meanings given in the preceding claims and X “can be an anion from the group F “ , Cl “ , Br “ and J " , either directly to a compound of the general formulas (I) or (II)
- R4, R5, R6 and X have the meanings given above, are reacted in an anhydrous, inert, aprotic, organic solvent, or in which the compounds of the general formulas (III) or (IV), if appropriate after previous purification, with a Base selected from the group of metal alcoholates (MOR), metal hydrides (MH), metal amides
- the compounds of the general formulas (III) and (IV), the base used and the ruthenium compound of the general formula (X) are in this process in a stoichiometric ratio in the range from 1: 1: 1 to 1: 1, 5: 1, 5 are used, the ratio of the base used to the ruthenium compound being independent of one another.
- potassium t-butoxide KO ⁇ utylat or potassium hydride KH is preferably used as the base.
- hydrocarbons or ethers can be used as solvents for this reaction.
- a solvent selected from the group consisting of pentane, hexane, heptane, octane, decane, benzene, toluene and tetrahydrofuran or mixtures thereof is preferably used for these.
- the reaction of the compounds of the general formulas (III) or (IV) with a ruthenium compound of the general formula (X) takes place within 30 minutes to two days at a temperature in the range between -78 to + 150 ° C., using nitrogen as the protective gas or argon.
- Solvents selected from the group pentane, hexane, heptane, octane, decane, benzene, toluene and tetrahydrofuran, the carbenes of the general formulas (V) and (VI) in a stoichiometric ratio to the ruthenium compounds of the general formula (X) in the range between 1: 1 to 1: 1, 5 are used and the reaction takes place within 30 minutes to two days at a temperature in a range from -78 to +100 ° C.
- the present invention also relates to the use of the compounds of the general formulas (I) and (II) as Catalysts in organic and organometallic synthesis.
- those of the compounds of the general formulas (I) and (II) can be used as starting materials for the preparation of immobilized catalysts for organic and organometallic syntheses.
- the compounds of the general formulas (I) and (II) are as
- Catalysts can be used in CC coupling reactions, hydrogenations, isomerizations, silylations and hydroformylations or as catalysts in olefin metathesis reactions such as cross metathesis (CM), ring closure metathesis (ROM), ring opening metathesis polymerization (ROMP), acyclic diene metathesis polymerization (ADMET) and en-ln- Metathesis.
- CM cross metathesis
- ROM ring closure metathesis
- ROMP ring opening metathesis polymerization
- ADMET acyclic diene metathesis polymerization
- en-ln- Metathesis en-ln- Metathesis
- N-heterocyclic carbene ligands stand for 1,3-disubstituted imidazol-2-ylidenes and 1,3-disubstituted imidazolin-2-ylidenes which are derived from imidazole or 4,5-dihydroimidazole as the main body.
- the carbon atom between the two nitrogen atoms of the heterocycle is a carbene carbon atom, which is coordinated to the ruthenium atom by means of the lone pair of electrons.
- the alkylidene ligand also contains a carbene carbon atom which is bonded to the ruthenium center.
- An R-SiR'n (OR ') n- 3 group is bonded to at least one of the two nitrogen atoms of the NHC ligand, the Si (OR') 3 .n building block for a subsequent reaction with a metal oxide which is active OH groups on the surface is capable.
- the compounds of the general formulas (I) and (II) can in principle be prepared by two different methods, which are referred to below as Method A and Method B.
- the reaction takes place in a protective gas atmosphere.
- nitrogen and argon are preferred as protective gases.
- the starting materials can be dissolved or suspended in anhydrous, inert, aprotic organic solvents.
- the compounds of the general formulas (I) and (II) can be used as catalysts in organic and organometallic synthesis. They also serve as starting materials for the production of immobilized catalysts, which in turn can be used in organic and organometallic synthesis. In particular, they can be used as catalysts in C-C coupling reactions, hydrogenations and hydroformylation.
- the compounds of the general formulas (I) and (II) compared to the prior art are: the compounds can be covalently immobilized on a support by the SiR'n (OR ') 3 - n group present. This makes them very easy to separate from the reaction solutions or reaction products in application reactions.
- the compounds of the general formulas (I) and (II) can thus be recycled and reused in catalytic ones Reactions are used as a catalyst. This leads to savings in process costs in all application reactions, in particular in catalytic reactions using expensive transition metal catalysts. Since the SiR ' n (OR') 3 .
- R 'in the SiR' n (OR ') 3 - n unit is a hydrocarbon radical, where n can be 0, 1 or 2, preferably 0 and 1 and very preferably 0.
- This hydrocarbon radical R' can be independent of the Position in the molecule assume different meanings and be straight-chain, unbranched (linear), branched, saturated, mono- or polyunsaturated, cyclic (A), aromatic (Ar) or alkylaromatic (AAr, AarA), optionally mono- or polysubstituted.
- a and Ar can assume all the meanings given below.
- R ' is preferably a straight-chain, unbranched (linear), branched, saturated, mono- or polyunsaturated, or cyclically saturated or mono- or polyunsaturated, alkyl radical with 1-12 carbon atoms.
- R ' is particularly preferably a straight-chain or branched saturated alkyl radical having 1-7 C atoms, that is to say a subgroup from the alkyl group A, which is defined in more detail below.
- R 'can therefore preferably have the meanings
- 4-methylpentyl (-C 6 H 12 -), 1, 1-, 1, 2-, 1,3-, 2,2-, 2,3- or 3,3-dimethylbutyl (-C 6 H 12 -), 1- or 2-ethylbutyl (-C 6 H 12 -), 1-ethyl-1-methylpropyl (-C 6 H 12 -), 1-ethyl-2 -methylpropyl (-C 6 H 12 -), 1, 1, 2- or 1, 2,2-trimethylpropyl (-C 6 H ⁇ 2 -), heptyl, octyl, nonyl, decyl, undecyl or dodecyl.
- R ' is very particularly preferably a C 1 -C 4 -alkyl radical from the group consisting of methyl, ethyl, propyl, i-propyl, butyl, i-butyl, sec-butyl and tert-butyl.
- R ' can also contain alkenyl vinyl, propenyl, 1,2-propadienyl, butenyl, butadienyl, pentenyl,
- the SiR ' ⁇ (OR') 3 . n Group is connected via a hydrocarbon residue R to the nitrogen atom of the heterocycle.
- the hydrocarbon radical R is preferably a radical with 1 to 30 carbon atoms.
- This hydrocarbon radical can be straight-chain, unbranched (linear), branched, saturated, mono- or polyunsaturated, cyclic (A), or aromatic (Ar), heterocyclic or herteroaromatic (Het) and optionally mono- or polysubstituted.
- the hydrocarbon radical R can be a radical A, Ar, A-Ar, A-Ar-A, Het, A-Het, A-Het-A, the groups A, Ar and Het each being the following given meanings.
- R is preferably a radical A, Ar, A-Ar, A-Ar-A with not more than 20 C atoms.
- A is preferably a straight-chain or branched, saturated C 1 -C 2 -alkyl radical, or a cycloalkyl having 3 to 10 C atoms or a C 4 -C 2 o-cycloalkyl bonded via one or two alkyl groups.
- Alkylene has the same meanings as given for A, with the proviso that a further bond is linked from the alkyl to the next bond neighbor.
- A is, for example, an alkylene group selected from the group
- A can also be a cycloalkylene group with 3 to 30 C atoms, preferably C3-C9 cycloalkylene.
- cycloalkyl can be saturated, unsaturated, optionally via one or two alkyl groups in the molecule
- Cycloalkylene group to be replaced preferably means cyclopropyl, cyclobutyl, cyclopentyl,
- cycloalkyl preferably means 1,2-cyclopropyl, 1,2- or 1,3-cyclobutyl, 1,2- or 1,3-cyclopentyl, 1,2-, 1,3- or 1,4-cyclohexyl, further
- A can also be an unsaturated alkenyl or alkynyl group with 2 - 20 C atoms, which are bonded both to the imidazoi nitrogen or an imidazole carbon and to the SiR ' n (OR') n - 3 group can.
- Alkenyl groups can be straight-chain, branched or cyclic C2-C30 alkenyls, preferably straight-chain, branched cyclic C2-C9
- Alkenyls particularly preferably straight-chain or branched C2-C6 alkenyls from the group consisting of vinyl, propenyl, butenyl, pentenyl or hexenyl.
- Cycloalkenyl groups can be straight-chain or branched C3-C30-cycloalkenyls, preferably C3-C9-cycloalkenyls, particularly preferably C3-
- Alkynyl groups can be straight-chain or branched C2-C30-alkynyls, preferably straight-chain or branched C2-C9-alkynyls, particularly preferably straight-chain or branched C2-C6-alkynyls from the group ethynyl, propynyl, butynyl, pentynyl or hexynyl.
- alkenyl, cycloalkenyl or alkynyl are part of the hydrocarbon radical R, they of course have the same meanings with the proviso that a further bond from the alkenyl or from the alkynyl to the next bond neighbor in the molecule is linked.
- Ar is a mono- or polynuclear aromatic hydrocarbon radical with 6 - 30 C atoms, which can be substituted one or more times or unsubstituted.
- Ar is preferably a mono- or polysubstituted phenyl or naphthyl, where substituents can have the meanings of A and Ar has a total of no more than 20 C atoms.
- Aryl groups can preferably be C 6 -C 10 aryls, preferably phenyl or
- Alkylaryls can be -C 8 alkylaryls, preferably toluyl or mesityl.
- Ar preferably denotes substituted or unsubstituted phenyl, naphthyl, anthryl,
- Phenanthryl which is replaced by A, OA, CO-AOH, COOH, COOA, fluorine, chlorine, bromine, iodine, hydroxy, methoxy, ethoxy, propoxy, butoxy, pentyloxy, hexyloxy, nitro, cyan, formyl, acetyl, propionyl, trifluoromethyl, Amino, methylamino, ethylamino, dimethylamino, diethylamino, benzyloxy, sulfonamido, methylthio, methylsulfinyl, methylsulfonyl,
- Methylsulfonamido, ethylsulfonamido, propylsulfonamido, butylsuifonamido, dimethylsulfonamido, phenylsulfonamido, carboxy, methoxycarbonyl, ethoxycarbonyl, aminocarbonyl may be mono-, di- or tri-substituted, where Ar is not more than 20 carbon atoms and is substituted by A or A A is bound.
- Ar preferably denotes unsubstituted, mono- or polysubstituted phenyl, and in particular preferably phenyl, o-, m- or p-tolyl, o-, m- or p-ethylphenyl, o-, m- or p-propylphenyl, o- , m- or p-isopropylphenyl, o-, m- or p-tert-butylphenyl o-, m- or p-cyanophenyl, o-, m- or p-methoxyphenyl, o-, m- or p-ethoxyphenyl, o-, m- or p-fluorophenyl, o-, m- or p-bromophenyl, o-, m- or p-chlorophenyl, o-, m- or p-methylthiophenyl
- Arylene has the same meanings as for Ar, with the proviso that a further bond is formed from the aromatic system to the next bond neighbor.
- the group labeled Het can have the following meanings:
- Isoquinolyl, cinnolinyl, 5 where substituents A, OA, CO-AOH, COOH, COOA, fluorine, chlorine, bromine, iodine can be
- Het particularly preferably 2- or 3-furyl, 2- or 3-thienyl, 1-, 2- or 3-
- Benzopyrazolyl 2-, 4-, 5-, 6- or 7-benzoxazolyl, 3-, 4-, 5-, 6- or 7-benzisoxazolyl, 2-, 4-, 5-, 6- or 7-benzthiazolyl, 2-, 4-, 5-, 6- or 7-benzisothiazolyl, 4-, 5-, 6- or 7-benz-2,1, 3-oxadiazolyl, 2-, 3-, 4-, 5-, 6 -, 7- or 8-quinolyl, 1-, 3-, 4-, 5-, 6-, 7- or 8-isoquinolyl, 3-, 4-, 5-, 5 6-, 7- or 8-cinnolinyl , 2-, 4-, 5-, 6-, 7- or 8-, quinazolinyl, 4- or 5-
- heterocyclic radicals can also be partially or completely hydrogenated and have the following meanings:
- Dihydro-2H-1,5-benzodioxepin-6- or -7-yl further preferably 2,3-dihydrobenzofuranyl or 2,3-dihydro-2-oxo-furanyl.
- Heterocycloalkylene or heterocycloarylene has the same meanings as given for Het, with the proviso that a further bond is linked from the heterocyclic system to the next bond neighbor.
- Heterocycloalkylene is preferably 1, 2-, 2,3- or 1, 3-pyrrolidinyl, 1, 2-, 2,4-, 4,5- or 1, 5-imidazolidinyl, 1, 2-, 2,3-, or 1, 3-pyrazolidinyl, 2,3-, 3,4-, 4,5- or 2,5-oxazolidinyl, 1, 2-, 2,3-, 3,4- or 1,4-isoxazolidinyl, 2 , 3-, 3,4-, 4,5- or 2,5-thiazolidinyl, 2,3-, 3,4-, 4,5- or 2,5-isothiazolidinyl, 1, 2-, 2,3- , 3,4- or 1, 4-piperidinyl, 1, 4- or 1, 2-piperazinyl, further preferably 1, 2,3-tetrahydro-triazol-1, 2- or -1, 4-yl, 1, 2 , 4-tetrahydro-triazol-1, 2- or 3,5-yl, 1, 2- or 2,5-tetrahydro-tetra
- Tetrahydro-thiadiazol-2,3-, -3,4-, -4,5- or -1 5-yl, 1, 2,4-tetrahydro-thiadiazol-2,3-, -3,4-, - 4,5- or -1, 5-yl, 1, 2,3-thiadiazol-2,3-, -3,4-, -4,5- or -1, 5-yl, 2,3- or 3 , 4-morpholinyl, 2,3-, 3,4- or 2,4-thiomorpholinyl.
- the hydrocarbon radical R is very particularly preferably a group with not more than 20 carbon atoms and takes on selected meanings Compounds which are bonded to the -C 1 -C 2 -alkylenes, C 3 -C ⁇ o-cycloalkylenes, or via one or two alkyl groups
- C 4 -C 20 -cycloalkylenes, C 6 -Ci 4 -arylenes or the C 7 -C 20 -alkylarylenes count and particularly preferably a CrC 4 -alkylene chain from the series methylene, ethylene, propylene and butylene or one C 6 -C 8 arylene chain from the
- R3 is a hydrocarbon radical which can assume all meanings of A, Ar, AAr, AArA, Het, AHet, AHetA, in which H atoms can be replaced by functional groups Z.
- This hydrocarbon radical can be straight-chain, unbranched (linear), branched, saturated, mono- or polyunsaturated, cyclic (A), or aromatic (Ar), heterocyclic or herteroaromatic (Het) and optionally mono- or polysubstituted.
- the hydrocarbon radical R3 is a radical which has a stabilizing effect on the carbene function of the compounds of the general formulas (I) and (II). H atoms in R3 can be replaced by functional groups Z, as defined below.
- R3 is preferably an aliphatic, aromatic or heteroaromatic hydrocarbon radical, specifically as described above, an aliphatic radical A, an aromatic hydrocarbon Ar from the groups listed above or a heterocyclic substituent Het as defined above.
- R3 is very preferably an aliphatic. H. a straight-chain, unbranched (linear), branched, saturated, mono- or polyunsaturated, or a cyclic aliphatic or aromatic hydrocarbon residue with 1 - 18 C-atoms.
- R1 and R2 can be independently of one another H or can assume all the meanings of shark, A, Ar and AAr, as indicated above, where in A and Ar H atoms can be replaced by functional groups Z, and shark F, Cl, Br or I can mean.
- R1 and R2 particularly preferably assume the meanings of R3 or denote H, Cl or Br.
- R1 and R2 independently of one another denote H, Cl, Br, straight-chain, branched, saturated, mono- or polyunsaturated C 1 -C 7 -alkyl radical, it being possible for one or more H in the alkyl radical to be replaced by Z.
- H atoms can be replaced by functional groups Z and carry N, P, O or S atoms. They can be groups which have one or more alcohol, aldehyde, carboxylic acid, amine, amide, imide, phosphine, ether or thioether function, ie they can include radicals with the meanings OA, NHA, NAA ', PAA', CN, N0 2 , SA, SOA, S0 2 A, or S0 2 Ar, where A, A 'and A "can independently take the meanings of A as defined.
- a group Z is preferably OA, NHA, NAA ' and PAA '.
- R1 and R2 can therefore also be, for example, S0 3 H, F, Cl, a hydroxyl, alkanoyi or cycloalkanoyl radical.
- R1, R2 or R2 can mean methoxy, ethoxy, propionyl, butyryl, pentanoyl, hexanoyl, heptanoyl, octanoyl, nonanoyl, decanoyl, undecanoyl, dodecanoyl, tridecanoyl, tetradecanoyl, pentadecanoyl, hexadecanoyl or heptadecanoyl, heptadecanoyl or heptadecanoyl.
- R1, R2 and R3 can also be acyl radicals.
- R1, R2 and R3 can preferably be acyl radicals having 1, 2, 3, 4, 5, 6, 7, 8, 9 or 10 carbon atoms and e.g. Formyl, acetyl, propionyl, butyryl, trifluoroacetyl or benzoyl or naphthoyl mean.
- R1, R2 and R3 can furthermore be amino, methylamino, dimethylamino, methylthio, methylsulfinyl, methylsulfonyl or phenylsulfonyl groups.
- One, two or three methylene groups in the R1, R2 and R3 radicals in alkyl, alkylene, cycloalkyl, cycloalkylene, alkanoyi and cycloalkanoyl can also be replaced by N, O and / or S.
- a hydrocarbon group in R1, R2 and R3 can thus assume the meanings of A, Ar or AAr and an alkyl, alkenyl, aryl, alkylaryl or Alkynyl group as defined above, in which one or more H atoms can be replaced by the above-mentioned functional groups Z.
- R4 can independently be A, Ar or AAr, as defined above, and in particular an alkyl, cycloalkyl or aryl group with up to 10 C-
- R4 is preferably a -C 6 -alkyl, a C 5 -C 8 -cycloalkyl or a C6-C10-aryl and can preferably have the meanings
- 4-methylpentyl (-C 6 H 12 -), 1, 1-, 1, 2-, 1, 3-, 2,2-, 2,3- or 3,3-dimethylbutyl (-C 6 H 12 -) , 1- or 2-ethylbutyl (-C 6 H 2 -), 1-ethyl-1-methylpropyI (-C 6 H ⁇ 2 -), 1-ethyl-2-methylpropyl (-C 6 H 12 -), 1, 1, 2- or 1, 2,2-trimethylpropyl (-C 6 H ⁇ 2 -), cyclopentyl, cyclohexyl, methylcyclopentyl, cycloheptyl, methylcyclohexyl, cyclooctyl, phenyl, o-, m- or p-tolyl, 0-, m- or p-ethylphenyl, o-, m- or p-propylphenyl, o-, m- or p-isopropyl
- R5 and R6 can independently be H, A or Ar, it being possible for H atoms in A or Ar to be substituted by alkenyl or alkynyl radicals, with no more than 30 C atoms.
- R5 and R6 can therefore independently of one another be H, alkyl, cycloalkyl, aryl, alkenyl or alkynyl having up to 30 carbon atoms.
- Preference is given to R5 and R6 is H, C ⁇ C 0 alkyl, C 6 -C 10 aryl, C 2 -C 10 alkenyl and C 2 - Cs alkynyl.
- R5 and R6 can therefore preferably have the meanings methyl, ethyl, propyl, i-propyl, butyl, i-butyl, sec-butyl, tert-butyl, pentyl, 1-, 2- or 3-methylbutyl (-C 5 H 10 -), 1, 1-, 1, 2- or 2,2-dimethylpropyl (-C 5 H 10 -), 1-ethylpropyl (-C 5 H 10 -), hexyl (-C 6 H- ⁇ 2 -) , 1-, 2-, 3- or 4-methylpentyl (-C 6 H ⁇ 2 -), 1, 1-, 1, 2-, 1, 3-, 2,2-, 2,3- or 3,3 -Dimethylbutyl (-C 6 H ⁇ 2 -), 1- or 2-
- Ethylbutyl (-C 6 H ⁇ 2 -), 1 -Ethyl- 1-methyl propyl (-C 6 H ⁇ 2 -), 1-ethyl-2-methylpropyl (- C 6 H ⁇ 2 -), 1, 1, 2- or 1, 2,2-trimethylpropyl (-C 6 H 12 -), heptyl, octyl, nonyl, decyl, cyclopropenyl, cyclobutenyl, cyclopentenyl, cyclohexyl, cyclopentadienyl and methylcyclopentadienyl, phenyl, o-, m- or p-tolyl, o- , m- or p-ethylphenyl, o-, m- or p-propylphenyl, o-, m- or p-isopropylphenyl, o-, m- or p-tert-butylphenyl
- X is in each case a monovalent anion which is bonded as a ligand to a doubly positively charged ruthenium central atom in order to balance the charge.
- this bond can be a coordinative bond which is formed by free electron pairs of the anion or an ionic bond.
- the two anions X contained in the compounds (I) and (II) can independently of one another halide (Hai) from the group Br “ , Cl “ , J “ and F “ , pseudohalide such as cyanide (CN “ ) and thiocyanate (SCN “ ) , Aikoxide, aryl oxide, alkyl, aryl, carboxyl, etc.
- X is preferably halide, very preferably Cl or Br.
- the compounds of the general formulas (III) and (IV) substituted by silyl groups on the second nitrogen atom of the imidazole ring can be prepared in a simple manner by reacting substituted imidazole of the general formula (VII) or substituted 4,5-dihydroimidazole of the general formula (VIII) with chlorine, bromine or iodine-containing alkoxysilanes of the general formula (IX)
- the reaction takes place within a short time while maintaining the reaction temperature or requires several days.
- the reaction temperature is in a range from 20 to + 200 ° C, preferably from 20 to 100 ° C and very preferably between 60 and 100 ° C.
- the products (III) and (IV) formed can be stable substances after the reaction has ended Isolate purely by known methods and further process according to method A to give the compounds of the general formulas (I) and (II).
- the compounds of the general formulas (V) and (VI) are prepared by reaction (reaction equations Eq. 8 and GI.9) of the alkoxysilyl-functionalized imidazolium salts (III) or alkoxysilyl-functionalized 4,5-dihydroimidazolium salts (IV) with a suitable base in anhydrous, inert, aprotic organic solvents under a protective gas atmosphere.
- This reaction can optionally be carried out directly after the production of
- Imidazolium salts (III) or 4,5-dihydroimidazolium salts (IV) are carried out without prior purification.
- Bases suitable for this reaction are metal alcoholates of the general formula MOR or bases selected from the group of metal hydrides, MH, metal amides, MNH 2 and ammonia in an anhydrous, inert, aprotic organic solvent. NH 3 / NaH or a metal hydride MH or a metal alcoholate MOR is preferred as the base used.
- Potassium t-butoxide (KO'ßu) and potassium hydride (KH) have proven to be particularly suitable in various reactions. For the reaction, all reactants can be used together in the reaction vessel. The order of adding the components can be chosen arbitrarily.
- the starting compounds of the general formulas (III) and (IV) can in a suitable solvent, such as. B. be pre-dissolved or suspended in an ether. Nitrogen or argon can serve as the protective gas atmosphere. This reaction can take place in a temperature range from -78 ° C to + 100 ° C, preferably from -40 ° C to +60 ° C, during a reaction time of 1 minute to 6 hours.
- the products of the general formulas (V) or (VI) formed can, if appropriate after isolation of solid by-products and removal of the volatile constituents, be isolated in a simple manner by extraction and crystallization, or directly by method B to give the compounds of the general formulas (I) or (II) be implemented.
- the compounds of the general formulas (I) and (II) can be prepared on the one hand by reacting compounds of the general formulas (III) and (IV) with a base capable of deprotonating (III) or (IV) such as metal alcoholates, MOR, metal hydrides, MH, metal amides, MNH 2 or ammonia in the presence of a ruthenium compound of the general formula (X)
- the base used is preferably potassium t-butoxide (KO * Bu) or potassium hydride (KH).
- the order of adding the components can be chosen arbitrarily.
- the starting compounds can be predissolved or suspended in a suitable inert solvent. Pure hydrocarbons and cyclic ethers are preferably used as solvents.
- pentane, hexane, heptane, octane, decane, benzene or toluene are preferably used, very preferably heptane and toluene.
- cyclic ethers tetrahydrofuran is preferably used.
- Nitrogen or argon can serve as the protective gas atmosphere.
- the base used and the ruthenium starting compound are generally used in a slight to significant excess compared to the starting compounds of the general formulas (III) and (IV).
- the stoichiometric ratio of the compounds of the general formulas (III) and (IV) to the base used and to the ruthenium starting compound is therefore in the range between 1: 1: 1 to 1: 1.5: 1.5, the stoichiometric ratio of the base used and the Ruthenium starting compound are mutually independent.
- the stoichiometric ratio of the compounds (III) or (IV) to the base used can be in the range between 1: 1 to 1: 1.5 and the ratio of base to ruthenium starting compound or ruthenium starting compound to base can independently be in the range between 1: 1.5. Consequently, the stoichiometric ratios of the compounds of the general formulas (III) and (IV) to the base used and to the ruthenium starting compound of 1: 1.5: 1 or 1: 1: 1.5 are also included as suitable stoichiometric starting material ratios.
- the stoichiometric ratio is preferably in a range between 1: 1: 1 to 1: 1.2: 1.2.
- the reaction can take place in a temperature range from -78 ° C to + 150 ° C, preferably from -20 ° C to +100 ° C.
- the reaction very preferably takes place in a temperature range between 0 ° C. and 80 ° C.
- the reaction time is 30 minutes to two days, preferably one hour to 24 hours and most preferably one hour to 12 hours.
- the product is separated off by extraction with a non-polar aprotic solvent, or the by-products can also be separated off from the product by filtration.
- the compounds of the general formulas (I) and (II) can be isolated as pure substances or can be purified by means of crystallization or chromatography using RP silica.
- the compounds of the general formulas (I) and (II) can also be prepared by reacting compounds of the general formula (V) or (VI) with a ruthenium compound of the general formula (X)
- R4, R5, R6 and X have the meanings given above, in anhydrous, inert, aprotic organic solvents (method B).
- the starting compounds can be predissolved or suspended in a suitable solvent.
- Pure hydrocarbons and cyclic ethers are preferably used as solvents for this purpose.
- pentane, hexane, heptane, octane, decane, benzene or toluene 0 are preferably used and very preferably heptane and toluene.
- cyclic ethers tetrahydrofuran is preferably used.
- Trapping reagent for the released P (R4) 3 has proven to be advantageous in particular for increasing the yield of the compounds of the general formulas (I) and (II).
- the stoichiometric ratio of the compound of general formula (V) or (VI) used to the ruthenium starting compound can therefore be in the range from 1: 1 to 1: 1.5, preferably between 1: 1 and 1. 1.2.
- the reaction can be carried out in a temperature range from -78 ° C to + 100 ° C. It is preferable to work in a temperature range between -20 ° C to +80 ° C. In most cases, very good results are achieved in the very preferred temperature range between 0 ° C and 40 5 ° C.
- the reaction time is generally 30 minutes to 2 days. , preferably one hour to 24 hours.
- the reaction is usually completed in a time between one hour and 12 hours. 10 After removing the volatile components in a high vacuum, the
- Production method A is preferred, since this is a one-pot synthesis, 15 which starts from more stable starting materials and the ligands (compounds (V) and (VI)) necessary for the formation of (I) and (II) are prepared in situ.
- the implementation of the reactions according to methods A or B is per se not critical.
- the reactions can be carried out in a simple manner in systems in which all parts and devices which come into contact with the reaction partners are inert to the chemicals used and show no signs of corrosion or leaching. It is crucial that r.,. the plant used can be temperature-controlled, offers reliable feeding and removal of the reactants and reaction products and has opportunities for intensive mixing of the reaction solution. Furthermore, the system should make it possible to work under an inert gas atmosphere or volatile
- Inert gas offers.
- the reactions can also take place in a technical system
- the reactions are usually carried out in batch mode, especially if the reactions are slow.
- the compounds of the general formulas (I) and (II) can be used as catalysts in organic and organometallic synthesis. They also serve as starting materials for the production of immobilized catalysts, which in turn can be used in organic and organometallic synthesis. In particular, they can be used as catalysts in C-C coupling reactions, hydrogenations, isomerizations, silylations and hydroformylations.
- the new compounds are particularly suitable as catalysts for the C-C coupling such as olefin metathesis and for hydrogenation reactions.
- the new compounds are particularly advantageous in olefin metathesis reactions such as cross metathesis (CM), ring closure metathesis (RCM), ring opening metathesis polymerization (ROMP), acyclic diene metathesis polymerization (ADMET) and en-in metathesis.
- CM cross metathesis
- RCM ring closure metathesis
- ROMP ring opening metathesis polymerization
- ADMET acyclic diene metathesis polymerization
- en-in metathesis en-in metathesis reactions
- GC ratio 1, 7-octadiene: cyclohexene: 1: 379 (30 min), 1: 456 (60 min), 1: 623 (90 min), 1: 693 (120 min), 1: 695 (150 min) , 1: 696 (180 min).
- GC ratio 1, 7-octadiene: cyclohexene: 1: 147 (30 min), 1: 185 (60 min), 1: 203 (90 min), 1: 266 (120 min), 1: 304 (150 min) , 1: 384 (180 min).
- GC ratio 1, 7-octadiene: cyclohexene: 1:13 (30 min), 1: 100 (60 min), 1: 156 (90 min), 1: 198 (120 min), 1: 243 (150 min) , 1: 301 (180 min).
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Abstract
Description
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP2006522912A JP2007501814A (ja) | 2003-08-11 | 2004-07-14 | N−ヘテロ環カルベン配位子を有する固定化可能ルテニウム触媒 |
| EP04763210A EP1654062A1 (de) | 2003-08-11 | 2004-07-14 | Immobilisierbare ruthenium-katalysatoren mit n-heterozyklischen carben-liganden |
| US10/567,846 US20060287450A1 (en) | 2003-08-11 | 2004-07-14 | Immobilizable ruthenium catalysts having n-heterocyclic carbene ligands |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10337119 | 2003-08-11 | ||
| DE10337119.2 | 2003-08-11 |
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| Publication Number | Publication Date |
|---|---|
| WO2005016522A1 true WO2005016522A1 (de) | 2005-02-24 |
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| Application Number | Title | Priority Date | Filing Date |
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| PCT/EP2004/007775 Ceased WO2005016522A1 (de) | 2003-08-11 | 2004-07-14 | Immobilisierbare ruthenium-katalysatoren mit n-heterozyklischen carben-liganden |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US20060287450A1 (de) |
| EP (1) | EP1654062A1 (de) |
| JP (1) | JP2007501814A (de) |
| CN (1) | CN1835799A (de) |
| TW (1) | TW200523026A (de) |
| WO (1) | WO2005016522A1 (de) |
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238604A (ja) * | 2006-02-08 | 2007-09-20 | Univ Waseda | 多核錯体、及びその縮合体 |
| WO2009124977A1 (de) * | 2008-04-08 | 2009-10-15 | Evonik Degussa Gmbh | Verfahren zur herstellung von ruthenium-carben-komplexen |
| FR2999185A1 (fr) * | 2012-12-12 | 2014-06-13 | Ecole Nationale Superieure De Chimie De Rennes | Procede de metathese d'olefines lineaires alpha utilisant un complexe du ruthenium comportant un diaminocarbene n-heterocyclique dissymetrique insature |
| US9427731B2 (en) | 2009-12-03 | 2016-08-30 | Materia, Inc. | Supported olefin metathesis catalysts |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19815275B4 (de) | 1998-04-06 | 2009-06-25 | Evonik Degussa Gmbh | Alkylidenkomplexe des Rutheniums mit N-heterozyklischen Carbenliganden und deren Verwendung als hochaktive, selektive Katalysatoren für die Olefin-Metathese |
| US8329921B2 (en) | 2009-11-09 | 2012-12-11 | Exxonmobil Chemical Patents Inc. | Metathesis catalyst and process for use thereof |
| US8237003B2 (en) | 2009-11-09 | 2012-08-07 | Exxonmobil Chemical Patents Inc. | Metathesis catalyst and process for use thereof |
| US9024034B2 (en) * | 2009-11-09 | 2015-05-05 | Exxonmobil Chemical Patents Inc. | Metathesis catalysts and processes for use thereof |
| US8809563B2 (en) | 2009-11-09 | 2014-08-19 | Exxonmobil Chemical Patents Inc. | Metathesis catalyst and process for use thereof |
| BR112012010894A2 (pt) * | 2009-11-09 | 2020-12-15 | Exxonmobil Chemical Patentes Inc. | "catalisadores de metátese e processos para uso dos mesmos" |
| GB201009656D0 (en) * | 2010-06-09 | 2010-07-21 | Univ St Andrews | Carboxylation catalysts |
| FR2999184B1 (fr) * | 2012-12-12 | 2015-01-09 | Ecole Nationale Superieure De Chimie De Rennes | Complexes de ruthenium comprenant un diaminocarbene n-heterocyclique insature dissymetrique |
| CN103159802B (zh) * | 2013-03-11 | 2015-02-25 | 河南科技大学 | 异核钌金双环金属化合物及其制备方法和应用 |
| EP3115368A1 (de) * | 2015-07-10 | 2017-01-11 | Bergen Teknologioverforing AS | Verbesserte olefinmetathesekatalysatoren |
| WO2020061271A1 (en) * | 2018-09-20 | 2020-03-26 | Exxonmobil Chemical Patents Inc. | Metathesis catalyst system for polymerizing cycloolefins |
| WO2020061277A1 (en) * | 2018-09-20 | 2020-03-26 | Exxonmobil Chemical Patents Inc. | Metathesis catalyst system for polymerizing cycloolefins |
| JPWO2023048084A1 (de) * | 2021-09-22 | 2023-03-30 |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005016941A1 (de) * | 2003-08-11 | 2005-02-24 | Merck Patent Gmbh | Immobilisierbare n-heterozyklische carbene |
-
2004
- 2004-07-14 US US10/567,846 patent/US20060287450A1/en not_active Abandoned
- 2004-07-14 CN CNA2004800229833A patent/CN1835799A/zh active Pending
- 2004-07-14 JP JP2006522912A patent/JP2007501814A/ja active Pending
- 2004-07-14 EP EP04763210A patent/EP1654062A1/de not_active Withdrawn
- 2004-07-14 WO PCT/EP2004/007775 patent/WO2005016522A1/de not_active Ceased
- 2004-08-10 TW TW093123951A patent/TW200523026A/zh unknown
Non-Patent Citations (3)
| Title |
|---|
| BLECHERT ET AL: "Synthese und Anwendung eines permanent immobilisierten Olefinmetathese-Katalysators", ANGEW. CHEM., vol. 112, 2000, pages 4062 - 4065, XP002300269 * |
| BUCHMEISER ET AL: "Synthesis of a Silica-based heterogeneous second generation Grubbs catalyst", ADV. SYNTHE. CATAL., vol. 344, 2002, pages 712 - 719, XP002300270 * |
| CETINKAYA, BEKIR ET AL: "Synthesis and immobilization of N - heterocyclic carbene complexes of Ru(II): catalytic activity and recyclability for the furan formation", JOURNAL OF MOLECULAR CATALYSIS A: CHEMICAL , 184(1-2), 31-38 CODEN: JMCCF2; ISSN: 1381-1169, 2002, XP002300268 * |
Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2007238604A (ja) * | 2006-02-08 | 2007-09-20 | Univ Waseda | 多核錯体、及びその縮合体 |
| WO2009124977A1 (de) * | 2008-04-08 | 2009-10-15 | Evonik Degussa Gmbh | Verfahren zur herstellung von ruthenium-carben-komplexen |
| US8501975B2 (en) | 2008-04-08 | 2013-08-06 | Evonik Degussa Gmbh | Method for manufacturing ruthenium carbene complexes |
| US8816114B2 (en) | 2008-04-08 | 2014-08-26 | Evonik Degussa Gmbh | Method for manufacturing ruthenium carbene complexes |
| US9427731B2 (en) | 2009-12-03 | 2016-08-30 | Materia, Inc. | Supported olefin metathesis catalysts |
| FR2999185A1 (fr) * | 2012-12-12 | 2014-06-13 | Ecole Nationale Superieure De Chimie De Rennes | Procede de metathese d'olefines lineaires alpha utilisant un complexe du ruthenium comportant un diaminocarbene n-heterocyclique dissymetrique insature |
Also Published As
| Publication number | Publication date |
|---|---|
| TW200523026A (en) | 2005-07-16 |
| JP2007501814A (ja) | 2007-02-01 |
| CN1835799A (zh) | 2006-09-20 |
| EP1654062A1 (de) | 2006-05-10 |
| US20060287450A1 (en) | 2006-12-21 |
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