EP1765763A2 - Procede de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs - Google Patents

Procede de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs

Info

Publication number
EP1765763A2
EP1765763A2 EP05772382A EP05772382A EP1765763A2 EP 1765763 A2 EP1765763 A2 EP 1765763A2 EP 05772382 A EP05772382 A EP 05772382A EP 05772382 A EP05772382 A EP 05772382A EP 1765763 A2 EP1765763 A2 EP 1765763A2
Authority
EP
European Patent Office
Prior art keywords
alkyl
optically active
hydrogenation
atoms
formula
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Withdrawn
Application number
EP05772382A
Other languages
German (de)
English (en)
Inventor
Frank Hettche
Christoph JÄKEL
Marko Friedrich
Rocco Paciello
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
BASF SE
Original Assignee
BASF SE
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from DE200410032968 external-priority patent/DE102004032968A1/de
Priority claimed from DE200510007750 external-priority patent/DE102005007750A1/de
Application filed by BASF SE filed Critical BASF SE
Publication of EP1765763A2 publication Critical patent/EP1765763A2/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07C—ACYCLIC OR CARBOCYCLIC COMPOUNDS
    • C07C67/00—Preparation of carboxylic acid esters
    • C07C67/30—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group
    • C07C67/303—Preparation of carboxylic acid esters by modifying the acid moiety of the ester, such modification not being an introduction of an ester group by hydrogenation of unsaturated carbon-to-carbon bonds
    • C—CHEMISTRY; METALLURGY
    • C07—ORGANIC CHEMISTRY
    • C07B—GENERAL METHODS OF ORGANIC CHEMISTRY; APPARATUS THEREFOR
    • C07B2200/00—Indexing scheme relating to specific properties of organic compounds
    • C07B2200/07—Optical isomers

Definitions

  • the invention relates to a novel process for the preparation of optically active alkyl-succinic acid monoalkyl esters.
  • R, R 1 alkyl, aryl, arylalkyl via an asymmetric hydrogenation starting from their directly unsaturated precursors has not yet been satisfactorily resolved.
  • optical purity achieved in the processes cited does not therefore meet the requirements in the active substance range without additional enrichment steps, which in most cases require an enantiomeric excess of ⁇ 98% ee.
  • D and E independently of one another, denote H, C 1 -C 10 -alkyl, RC 1 -C 10 -alkyl, aryl or alkylaryl,
  • R 1 and R 2 independently of one another are C 1 -C 6 -alkyl, aryl, alkylaryl, R 1 furthermore hydrogen,
  • B a bridge member with 1-5 C atoms between the two P atoms or Cp-Fe-Cp.
  • the compounds of the formula (I) are optically active compounds which are each intended to represent an enantiomer (R or S).
  • Enantioselective hydrogenation is to be understood below to mean that not both enantiomers are formed to the same extent by the hydrogenation, but that one enantiomer (R or S) in high optical purity, in particular with an ee value of 98, 99, 99.5 % is formed.
  • Preferred starting compounds (II) are those in which D and E, independently of one another, have the meaning H, methyl, ethyl, propyl, butyl, pentyl, hexyl, tert-butyl, octyl, nonyl, decyl, the alkyl designation being both unbranched and the branched isomers. Particular preference is given to those starting compounds in which D and E are H and methyl, in particular those in which D and E are H or D and E are methyl. Further preferred starting compounds (II) are those in which D is H and E is butyl.
  • the radical R can be C r Ci 0 - alkyl, in which individual H atoms of the alkyl radical in turn by further radicals such as OH, NH 2, NO 2, CN, F, Cl, Br, J, may be replaced.
  • R can also be aryl radicals such as phenyl, naphthyl, and also alkylaryl radicals such as benzyl, where the aryl radicals can also be substituted again.
  • the catalysts consist of a metal atom of the group Pd, Pt, Ru, Rh, Ni, Ir. Particularly preferred are catalysts with Rh, Ru or Ir as the metal atom, in particular Rh catalysts are suitable for the inventive method.
  • precursors such as
  • X can be any generally known anion in the asymmetric synthesis known to those skilled in the art.
  • Examples of X are halogens such as Cl “ , Br “ , I “ , BF 4 -, CIO 4 -, SbF 6 -, PF 6 -, CF 3 SO 3 -, BAr 4 - preferred for X are BF 4 " , CF 3 SO 3 -, SbF 6 -, CIO 4 -, in particular BF 4 - and CF 3 SO 3 -.
  • the catalysts of the process according to the invention contain one or more phosphoan ligands of the general formula (L).
  • Preferred substituents R 1 and R 2 are H, methyl, ethyl, n-propyl, isopropyl, n-butyl, isobutyl, tert-butyl, benzyl.
  • radicals R 1 are preferred in which the two R 1 are bridged, such as isopropylidene or benzylidene.
  • Preferred ligands L are those in which A represents a further phospholane residue together with a bridging member B, where B is a bridge of 1 to 5 C atoms.
  • Atoms between the two phosphorus atoms does not mean that B consists of a maximum of 5 C atoms, but that the direct connection between the two P atoms does not comprise more than 5 C atoms.
  • B may be a phenyl ring if the two P atoms are ortho attached to it.
  • bridging compound B may also be a ferrocene-type compound consisting of substituted or unsubstituted cyclopentadienyl radicals (Cp) sandwiching an Fe atom (Cp-Fe-Cp), the P atoms being attached to the Cp radicals ,
  • Particularly preferred ligands L are:
  • Ligand MetaU Complexes can be prepared by using in a known manner ⁇ eg Uson, Inorg. Chim. Acta 73, 275 1983, EP-A 0158875, EP-A 437690) by reaction with rhodium, iridium, ruthenium, palladium, platinum; Nickel complexes containing labile ligands (eg, [RuCI 2 (COD) J n , [Rh (COD) 2 ] BF 4 , [Rh (COD) 2 ] CF 3 SO 3 Rh (COD) 2 CIO 4 , [Ir (COD) CI] 2 , p-cymene-ruthenium chloride dimer) catalytically active complexes synthesized.
  • labile ligands eg, [RuCI 2 (COD) J n , [Rh (COD) 2 ] BF 4 , [Rh (COD) 2 ] CF 3 SO 3 Rh (COD) 2 CIO
  • NBD can also be used successfully for the preparation of the complexes.
  • Suitable solvents are all solvents known to those skilled in the art for asymmetric hydrogenation.
  • Preferred solvents are lower alkyl alcohols such as methanol, ethanol, isopropanol, and toluene, THF 1 ethyl acetate. Particular preference is given to using methanol as solvent in the process according to the invention.
  • the inventive hydrogenation is generally carried out at a temperature of -20 to 15O 0 C, preferably at 0 to 100 0 C and particularly preferably at 10 - leads 8O 0 C Oberge.
  • the hydrogenation according to the invention uses substrate / catalyst ratios s / c ⁇ 20 000/1 and thereby gives ⁇ 98% ee. Even with s / c 110 000/1 an ee of 98% is achieved.
  • the catalyst consumption can be lowered even further.
  • the hydrogen pressure can be varied within a wide range between 0.1 bar and 300 bar for the hydrogenation process according to the invention. Very good results are obtained in a pressure range of 1 to 200 bar, preferably 1 to 100 bar.
  • the work-up of the reaction mixture is carried out by methods known to those skilled in the art.
  • the product may e.g. converted into a carboxylate, precipitated and so separated from the catalyst and then released again, alternatively, the catalyst can also be adsorbed on a bed, which allows easy to carry out chromatographic purification. A distillative removal of the product from the catalyst is also possible.
  • the enantiomeric excess of the product (2f?) - methyl succinic acid 4-monomethyl ester was determined by gas chromatography to> 98% (company: BGB analysis, column type: BGB-174, length: 30 m, inner diameter: 0.25 ml, film thickness: 0, 25 microns, carrier gas: helium, pressure: 2.35 bar, temperature: 135 0 C, heating rate: 1.2 ° C / min, retention time R-enantiomer: 23.3 min, retention time S-enantiomer: 22.6 min).
  • the s / c ratio was 20,000: 1.
  • Example 3 The reaction described in Example 1 was carried out with a catalyst / substrate ratio s / c of 40000/1. After 4 hours, the substrate was completely reacted. The enantiomeric excess of the product was> 98%.
  • Example 3 The reaction described in Example 1 was carried out with a catalyst / substrate ratio s / c of 40000/1. After 4 hours, the substrate was completely reacted. The enantiomeric excess of the product was> 98%.
  • the mixture was then hydrogenated at 6O 0 C and 5 bar hydrogen. After 16 h, the starting material was completely reacted. The enantiomeric excess of the product was 98%.
  • Rophos A bistriflate salt (Rophos * 2 CF 3 SO 3 H) is treated with 1.1 eq.
  • Amount of base preferably amines such as triethylamine, Hünigbase or similar
  • the metal source preferably (Rh [COD] 2 )
  • X BF 4 , CF 3 SO 3 , SbF 6 , PF 6 , CIO 4 , BAr 4
  • the mixture is allowed to come to room temperature.
  • the free ligand is used, the base addition is omitted.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
  • Low-Molecular Organic Synthesis Reactions Using Catalysts (AREA)

Abstract

L'invention concerne un procédé de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs de la formule (I) où D et E représentent indépendamment l'un de l'autre H, C1-C10-alkyle, RC1-C10-alkyle, aryle ou alkylaryle.
EP05772382A 2004-07-07 2005-07-06 Procede de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs Withdrawn EP1765763A2 (fr)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE200410032968 DE102004032968A1 (de) 2004-07-07 2004-07-07 Verfahren zur Herstellung von optisch aktiven Alkylbernsteinsäuremonoalkylestern
DE200510007750 DE102005007750A1 (de) 2005-02-18 2005-02-18 Verfahren zur Herstellung von optisch aktiven Alkylbernsteinsäuremonoalkylestern
PCT/EP2005/007289 WO2006002999A2 (fr) 2004-07-07 2005-07-06 Procede de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs

Publications (1)

Publication Number Publication Date
EP1765763A2 true EP1765763A2 (fr) 2007-03-28

Family

ID=35431129

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05772382A Withdrawn EP1765763A2 (fr) 2004-07-07 2005-07-06 Procede de production d'esters monoalkyle-acide succinique-alkyle optiquement actifs

Country Status (4)

Country Link
US (1) US7557240B2 (fr)
EP (1) EP1765763A2 (fr)
JP (1) JP2008505152A (fr)
WO (1) WO2006002999A2 (fr)

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0158875B1 (fr) 1984-04-19 1989-12-13 F. Hoffmann-La Roche Ag Rhodium-diphosphine complexes chirales pour des hydrogénatiens asymmétriques
DE4001019A1 (de) 1990-01-16 1991-07-18 Degussa Verfahren zur asymmetrischen hydrierung von (alpha)-ketocarbonylverbindungen zu optisch aktiven (alpha)-hydroxycarbonylverbindungen
DE19725796A1 (de) * 1997-06-18 1998-12-24 Basf Ag Herstellung optisch aktiver Phospholane, deren Metallkomplexe und Anwendung in der asymmetrischen Synthese
GB9823716D0 (en) * 1998-10-29 1998-12-23 Isis Innovation Diphosphines
DE69905746T2 (de) 1998-11-05 2004-12-16 Chirotech Technology Ltd. Chirale ligande für asymmetrische katalysis

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See references of WO2006002999A3 *

Also Published As

Publication number Publication date
US7557240B2 (en) 2009-07-07
WO2006002999A3 (fr) 2006-09-08
WO2006002999A2 (fr) 2006-01-12
JP2008505152A (ja) 2008-02-21
US20080058547A1 (en) 2008-03-06

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