CH359703A - Process for the production of new piperidines - Google Patents
Process for the production of new piperidinesInfo
- Publication number
- CH359703A CH359703A CH359703DA CH359703A CH 359703 A CH359703 A CH 359703A CH 359703D A CH359703D A CH 359703DA CH 359703 A CH359703 A CH 359703A
- Authority
- CH
- Switzerland
- Prior art keywords
- sep
- acid
- formula
- piperidines
- piperidine
- Prior art date
Links
- 150000003053 piperidines Chemical class 0.000 title claims description 10
- 238000000034 method Methods 0.000 title claims description 7
- 238000004519 manufacturing process Methods 0.000 title claims description 4
- 239000002253 acid Substances 0.000 claims description 5
- 239000001257 hydrogen Substances 0.000 claims description 5
- 229910052739 hydrogen Inorganic materials 0.000 claims description 5
- 150000003839 salts Chemical class 0.000 claims description 5
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 4
- 239000003638 chemical reducing agent Substances 0.000 claims description 4
- NPXOKRUENSOPAO-UHFFFAOYSA-N Raney nickel Chemical compound [Al].[Ni] NPXOKRUENSOPAO-UHFFFAOYSA-N 0.000 claims description 3
- 229910017052 cobalt Inorganic materials 0.000 claims description 3
- 239000010941 cobalt Substances 0.000 claims description 3
- GUTLYIVDDKVIGB-UHFFFAOYSA-N cobalt atom Chemical compound [Co] GUTLYIVDDKVIGB-UHFFFAOYSA-N 0.000 claims description 3
- 125000001424 substituent group Chemical group 0.000 claims description 3
- 239000007868 Raney catalyst Substances 0.000 claims description 2
- 229910000564 Raney nickel Inorganic materials 0.000 claims description 2
- NINIDFKCEFEMDL-UHFFFAOYSA-N Sulfur Chemical compound [S] NINIDFKCEFEMDL-UHFFFAOYSA-N 0.000 claims description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 2
- 150000001875 compounds Chemical class 0.000 claims description 2
- 150000002148 esters Chemical class 0.000 claims description 2
- 229910052760 oxygen Inorganic materials 0.000 claims description 2
- 239000001301 oxygen Substances 0.000 claims description 2
- 229920006395 saturated elastomer Polymers 0.000 claims description 2
- 229910052717 sulfur Inorganic materials 0.000 claims description 2
- 239000011593 sulfur Substances 0.000 claims description 2
- 125000004417 unsaturated alkyl group Chemical group 0.000 claims description 2
- 125000000217 alkyl group Chemical group 0.000 claims 1
- 125000003386 piperidinyl group Chemical group 0.000 claims 1
- RTZKZFJDLAIYFH-UHFFFAOYSA-N Diethyl ether Chemical compound CCOCC RTZKZFJDLAIYFH-UHFFFAOYSA-N 0.000 description 26
- UHOVQNZJYSORNB-UHFFFAOYSA-N Benzene Chemical compound C1=CC=CC=C1 UHOVQNZJYSORNB-UHFFFAOYSA-N 0.000 description 18
- -1 phenyl radicals Chemical class 0.000 description 16
- LFQSCWFLJHTTHZ-UHFFFAOYSA-N Ethanol Chemical compound CCO LFQSCWFLJHTTHZ-UHFFFAOYSA-N 0.000 description 12
- QTBSBXVTEAMEQO-UHFFFAOYSA-N Acetic acid Chemical compound CC(O)=O QTBSBXVTEAMEQO-UHFFFAOYSA-N 0.000 description 11
- VEXZGXHMUGYJMC-UHFFFAOYSA-N Hydrochloric acid Chemical compound Cl VEXZGXHMUGYJMC-UHFFFAOYSA-N 0.000 description 8
- OSSWEMSBSGRLRT-UHFFFAOYSA-N 2,3-diphenylpiperidine Chemical compound C1CCNC(C=2C=CC=CC=2)C1C1=CC=CC=C1 OSSWEMSBSGRLRT-UHFFFAOYSA-N 0.000 description 5
- AFVFQIVMOAPDHO-UHFFFAOYSA-N Methanesulfonic acid Chemical compound CS(O)(=O)=O AFVFQIVMOAPDHO-UHFFFAOYSA-N 0.000 description 5
- 150000003840 hydrochlorides Chemical class 0.000 description 5
- 239000000243 solution Substances 0.000 description 5
- CSCPPACGZOOCGX-UHFFFAOYSA-N Acetone Chemical compound CC(C)=O CSCPPACGZOOCGX-UHFFFAOYSA-N 0.000 description 4
- 229960000583 acetic acid Drugs 0.000 description 4
- 239000003054 catalyst Substances 0.000 description 4
- BWHMMNNQKKPAPP-UHFFFAOYSA-L potassium carbonate Chemical compound [K+].[K+].[O-]C([O-])=O BWHMMNNQKKPAPP-UHFFFAOYSA-L 0.000 description 4
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 4
- VZCYOOQTPOCHFL-OWOJBTEDSA-N Fumaric acid Chemical compound OC(=O)\C=C\C(O)=O VZCYOOQTPOCHFL-OWOJBTEDSA-N 0.000 description 3
- 229940035676 analgesics Drugs 0.000 description 3
- 239000000730 antalgic agent Substances 0.000 description 3
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 description 3
- 238000001035 drying Methods 0.000 description 3
- 239000000155 melt Substances 0.000 description 3
- VZCYOOQTPOCHFL-UHFFFAOYSA-N trans-butenedioic acid Natural products OC(=O)C=CC(O)=O VZCYOOQTPOCHFL-UHFFFAOYSA-N 0.000 description 3
- RYHBNJHYFVUHQT-UHFFFAOYSA-N 1,4-Dioxane Chemical compound C1COCCO1 RYHBNJHYFVUHQT-UHFFFAOYSA-N 0.000 description 2
- YMDNODNLFSHHCV-UHFFFAOYSA-N 2-chloro-n,n-diethylethanamine Chemical compound CCN(CC)CCCl YMDNODNLFSHHCV-UHFFFAOYSA-N 0.000 description 2
- HEDRZPFGACZZDS-UHFFFAOYSA-N Chloroform Chemical compound ClC(Cl)Cl HEDRZPFGACZZDS-UHFFFAOYSA-N 0.000 description 2
- XEKOWRVHYACXOJ-UHFFFAOYSA-N Ethyl acetate Natural products CCOC(C)=O XEKOWRVHYACXOJ-UHFFFAOYSA-N 0.000 description 2
- AEMRFAOFKBGASW-UHFFFAOYSA-N Glycolic acid Chemical compound OCC(O)=O AEMRFAOFKBGASW-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- CDBYLPFSWZWCQE-UHFFFAOYSA-L Sodium Carbonate Chemical compound [Na+].[Na+].[O-]C([O-])=O CDBYLPFSWZWCQE-UHFFFAOYSA-L 0.000 description 2
- WQDUMFSSJAZKTM-UHFFFAOYSA-N Sodium methoxide Chemical compound [Na+].[O-]C WQDUMFSSJAZKTM-UHFFFAOYSA-N 0.000 description 2
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 2
- 230000000202 analgesic effect Effects 0.000 description 2
- 239000007864 aqueous solution Substances 0.000 description 2
- 238000009835 boiling Methods 0.000 description 2
- 238000006243 chemical reaction Methods 0.000 description 2
- 238000001816 cooling Methods 0.000 description 2
- 235000019439 ethyl acetate Nutrition 0.000 description 2
- 229940093915 gynecological organic acid Drugs 0.000 description 2
- 229940098779 methanesulfonic acid Drugs 0.000 description 2
- 150000002825 nitriles Chemical class 0.000 description 2
- 150000007524 organic acids Chemical class 0.000 description 2
- 235000005985 organic acids Nutrition 0.000 description 2
- 239000003208 petroleum Substances 0.000 description 2
- 229910000027 potassium carbonate Inorganic materials 0.000 description 2
- YGSDEFSMJLZEOE-UHFFFAOYSA-N salicylic acid Chemical compound OC(=O)C1=CC=CC=C1O YGSDEFSMJLZEOE-UHFFFAOYSA-N 0.000 description 2
- RMGFLMXDCGQKPS-UHFFFAOYSA-N 1-(2-chloroethyl)pyrrolidine Chemical compound ClCCN1CCCC1 RMGFLMXDCGQKPS-UHFFFAOYSA-N 0.000 description 1
- PCHUBNOSEWYQAT-UHFFFAOYSA-N 1-(3,4-dimethoxyphenyl)-2-phenylethanone Chemical compound C1=C(OC)C(OC)=CC=C1C(=O)CC1=CC=CC=C1 PCHUBNOSEWYQAT-UHFFFAOYSA-N 0.000 description 1
- HDDNBUNZJIQDBQ-UHFFFAOYSA-N 1-(3-chloropropyl)piperidine Chemical compound ClCCCN1CCCCC1 HDDNBUNZJIQDBQ-UHFFFAOYSA-N 0.000 description 1
- SPRTXTPFQKHSBG-UHFFFAOYSA-N 1-(3-chloropropyl)pyrrolidine Chemical compound ClCCCN1CCCC1 SPRTXTPFQKHSBG-UHFFFAOYSA-N 0.000 description 1
- SWHSXWLSBBYLGM-UHFFFAOYSA-N 2-[(2-carboxyphenoxy)methoxy]benzoic acid Chemical compound OC(=O)C1=CC=CC=C1OCOC1=CC=CC=C1C(O)=O SWHSXWLSBBYLGM-UHFFFAOYSA-N 0.000 description 1
- WQMAANNAZKNUDL-UHFFFAOYSA-N 2-dimethylaminoethyl chloride Chemical compound CN(C)CCCl WQMAANNAZKNUDL-UHFFFAOYSA-N 0.000 description 1
- VSWICNJIUPRZIK-UHFFFAOYSA-N 2-piperideine Chemical compound C1CNC=CC1 VSWICNJIUPRZIK-UHFFFAOYSA-N 0.000 description 1
- KHEVPDFAQFJIGK-UHFFFAOYSA-N 2-sulfooxyethanesulfonic acid Chemical compound OS(=O)(=O)CCOS(O)(=O)=O KHEVPDFAQFJIGK-UHFFFAOYSA-N 0.000 description 1
- SLRMQYXOBQWXCR-UHFFFAOYSA-N 2154-56-5 Chemical compound [CH2]C1=CC=CC=C1 SLRMQYXOBQWXCR-UHFFFAOYSA-N 0.000 description 1
- NYYRRBOMNHUCLB-UHFFFAOYSA-N 3-chloro-n,n-dimethylpropan-1-amine Chemical compound CN(C)CCCCl NYYRRBOMNHUCLB-UHFFFAOYSA-N 0.000 description 1
- HRPVXLWXLXDGHG-UHFFFAOYSA-N Acrylamide Chemical compound NC(=O)C=C HRPVXLWXLXDGHG-UHFFFAOYSA-N 0.000 description 1
- KRKNYBCHXYNGOX-UHFFFAOYSA-K Citrate Chemical compound [O-]C(=O)CC(O)(CC([O-])=O)C([O-])=O KRKNYBCHXYNGOX-UHFFFAOYSA-K 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- FEWJPZIEWOKRBE-JCYAYHJZSA-N Dextrotartaric acid Chemical compound OC(=O)[C@H](O)[C@@H](O)C(O)=O FEWJPZIEWOKRBE-JCYAYHJZSA-N 0.000 description 1
- OFOBLEOULBTSOW-UHFFFAOYSA-N Propanedioic acid Natural products OC(=O)CC(O)=O OFOBLEOULBTSOW-UHFFFAOYSA-N 0.000 description 1
- PMZURENOXWZQFD-UHFFFAOYSA-L Sodium Sulfate Chemical compound [Na+].[Na+].[O-]S([O-])(=O)=O PMZURENOXWZQFD-UHFFFAOYSA-L 0.000 description 1
- FEWJPZIEWOKRBE-UHFFFAOYSA-N Tartaric acid Natural products [H+].[H+].[O-]C(=O)C(O)C(O)C([O-])=O FEWJPZIEWOKRBE-UHFFFAOYSA-N 0.000 description 1
- 239000003929 acidic solution Substances 0.000 description 1
- 230000002378 acidificating effect Effects 0.000 description 1
- NIXOWILDQLNWCW-UHFFFAOYSA-N acrylic acid group Chemical group C(C=C)(=O)O NIXOWILDQLNWCW-UHFFFAOYSA-N 0.000 description 1
- BHELZAPQIKSEDF-UHFFFAOYSA-N allyl bromide Chemical compound BrCC=C BHELZAPQIKSEDF-UHFFFAOYSA-N 0.000 description 1
- RMRFFCXPLWYOOY-UHFFFAOYSA-N allyl radical Chemical compound [CH2]C=C RMRFFCXPLWYOOY-UHFFFAOYSA-N 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 125000004202 aminomethyl group Chemical group [H]N([H])C([H])([H])* 0.000 description 1
- 230000003321 amplification Effects 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 125000002915 carbonyl group Chemical group [*:2]C([*:1])=O 0.000 description 1
- 239000003610 charcoal Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- AFAXGSQYZLGZPG-UHFFFAOYSA-N ethanedisulfonic acid Chemical compound OS(=O)(=O)CCS(O)(=O)=O AFAXGSQYZLGZPG-UHFFFAOYSA-N 0.000 description 1
- 125000001495 ethyl group Chemical group [H]C([H])([H])C([H])([H])* 0.000 description 1
- 239000000706 filtrate Substances 0.000 description 1
- 239000001530 fumaric acid Substances 0.000 description 1
- 239000012362 glacial acetic acid Substances 0.000 description 1
- 150000002431 hydrogen Chemical class 0.000 description 1
- VZCYOOQTPOCHFL-UPHRSURJSA-N maleic acid Chemical compound OC(=O)\C=C/C(O)=O VZCYOOQTPOCHFL-UPHRSURJSA-N 0.000 description 1
- 239000011976 maleic acid Substances 0.000 description 1
- 125000002496 methyl group Chemical group [H]C([H])([H])* 0.000 description 1
- 239000000203 mixture Substances 0.000 description 1
- 230000007935 neutral effect Effects 0.000 description 1
- 125000002560 nitrile group Chemical group 0.000 description 1
- 238000003199 nucleic acid amplification method Methods 0.000 description 1
- FJKROLUGYXJWQN-UHFFFAOYSA-N papa-hydroxy-benzoic acid Natural products OC(=O)C1=CC=C(O)C=C1 FJKROLUGYXJWQN-UHFFFAOYSA-N 0.000 description 1
- TYJJADVDDVDEDZ-UHFFFAOYSA-M potassium hydrogencarbonate Chemical compound [K+].OC([O-])=O TYJJADVDDVDEDZ-UHFFFAOYSA-M 0.000 description 1
- 125000001436 propyl group Chemical group [H]C([*])([H])C([H])([H])C([H])([H])[H] 0.000 description 1
- 230000036647 reaction Effects 0.000 description 1
- 238000001953 recrystallisation Methods 0.000 description 1
- 229960004889 salicylic acid Drugs 0.000 description 1
- 230000001624 sedative effect Effects 0.000 description 1
- 229910000029 sodium carbonate Inorganic materials 0.000 description 1
- 229910052938 sodium sulfate Inorganic materials 0.000 description 1
- 235000011152 sodium sulphate Nutrition 0.000 description 1
- 239000007787 solid Substances 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 235000002906 tartaric acid Nutrition 0.000 description 1
- 239000011975 tartaric acid Substances 0.000 description 1
- 238000005406 washing Methods 0.000 description 1
Landscapes
- Hydrogenated Pyridines (AREA)
Description
Verfahren zur Herstellung von neuen Piperidinen Die Erfindung betrifft ein Verfahren zur Herstel lung von neuen Piperidinen der Formel
EMI0001.0005
worin Ar, und Ar. gegebenenfalls Substituenten erster Klasse aufweisende Phenylreste darstellen.
Es wurde gefunden, dass die in Formel 1 definier ten 2,3-Diaryl-piperidine analgetische und sedative Eigenschaften aufweisen.
Die neuen Piperidine werden erfindungsgemäss gewonnen, indem man eine Verbindung der Formel
EMI0001.0012
mit einem Reduktionsmittel behandelt.
Als Reduktionsmittel eignen sich beispielsweise mild wirkende Katalysatoren und Wasserstoff, wie z. B. Raney-Nickel, Kupfer- oder Kobalt-Katalysa- toren und Wasserstoff.
Die Reduktion wird vorzugsweise in einem Lö sungsmittel vorgenommen, z. B. in Äthanol. Es ist anzunehmen, dass die Nitrilgruppe vorerst reduktiv in die Aminomethylgruppe überführt wird, die dann. mit der Carbonylgruppe den Ring zu einem Tetra- hydropyridin .schliesst; das letztere wird dann in das Piperidinderivat umgewandelt.
Die als Ausgangsstoffe zu verwendenden 4,5-Di- aryl-5-oxo-pentansäurenitrile können leicht aus den entsprechenden Desoxybenzoinen und Acrylmtril her gestellt werden [vgl. A.
D. Campbell et a1., J. Chem. Soc. 1956, S.960.ff.]. Man kann in dieser Weise umsetzen: 4,5 Diphenyl-5-oxo-pentansäurenitril, 4-(4'-Methoxy-phenyl)-5=phenyl-5-oxo-pentan- säurenitril, 4,5-Bis-(3'-methoxy-phenyl)-5-oxo-pentansäurenitril, 4,5-Bis-(4'-methyl-phenyl)-5-oxo-pentansäurenitril, usw.
zum entsprechenden 2,3-Diphenylpiperidin, 2-Phenyl-3-(4'-methoxy-phenyl)-piperidin, 2,3-Bis-(3'-methoxy-phenyl)-piperidin, 2,3-bis-(4' Methyl-phenyl)-piperidin usw.
Gewünschtenfalls kann in ein so erhaltenes 2,3- Diaryl-piperidin, in 1-Stellung noch ein gesättigter oder ungesättigter Alkyl- oder ein Aralkylrest R eingeführt werden, der durch Sauerstoff oder Schwefel oder NH bzw. N-Alkyl unterbrochen sein kann. Die Einführung eines solchen Restes erfolgt z.
B. mit Hilfe von reak tionsfähigen Estern von entsprechenden Alkanolen oder Aralkanolen. Man gelangt zu wirkungsvollen Analgetica, wenn man in die 1-Stellung z. B. alipha- tische Reste, wie einen Methyl-, Äthyl-, Propyl- oder Allylrest, einführt.
Wirksame Analgetica werden auch erhalten, wenn man anstelle des Alkylrestes einen Aralkylrest, z. B. den Benzylrest, den Benzhydryl- rest, den Phenäthylres.t oder den 4-Amino-phenäthyl- rest einführt.
Zu Analgetica mit besonders guter Wir kung gelangt man, wenn man in 1-Stellung der 2,3- Diaryl-piperidine einen tert. Aminoalkylrest einführt.
Setzt man beispielsweise das 2,3-Diphenyl-piperidin mit Dimethyl-amino-äthylchlorid, Diäthyl-amino-äthylchlorid, Pyrrolidino-äthylchlorid, Dimethyl-amino-propylchlorid, Diäthyl-amino-äthylchlorid, Pyrrolidino-propylchlorid, Piperidino-propylchlorid um, so gelangt man zu Stoffen, deren Salze sich in Wasser mit praktisch neutraler Reaktion, lösen.
Die 1-unsubstituierten und die 1-substituierten Diarylpiperidine unterscheiden sich in ihrem Wir- kungscharakter nicht wesentlich. Durch Einführung eines Substituenten R erhält man lediglich eine Ver stärkung der analgetischen Wirkung.
Die so erhaltenen Piperidine der Formel I kön nen gewünschtenfalls in ihre Säuresalze übergeführt werden. Zur Bildung von Säuresalzen eignen sich: an organische Säuren, wie z. B. Schwefelsäure, Chlor- wasserstoffsäure, Phosphorsäure u. a. m., oder auch organische Säuren, wie z.
B. Glycolsäure, Citronen- säure, Maleinsäure, Fumarsäure, Weinsäure, Salicyl- säure, Methylen - bis - salicylsäure, p - Amino- sahcyl- säure, Methansulfosäure, Äthan-disulfosäure, Äthion- säure usw.
<I>Beispiel 1</I> 36 g 4,5-Diphenyl-5-oxo-pentansäure-(1)-nitril werden in, 360 cm3 abs. Äthanol in Gegenwart von desaktiviertem Raney-Nickel 3 Stunden bei 80 C unter 80 atü Wasserstoffdruck geschüttelt. Nach dem Stehen über Nacht wird der Katalysator abgesaugt, das Filtrat mit Kohle behandelt, filtriert und dann im Vakuum eingeengt. Der Rückstand wird mit 100 cm3 2n Essigsäure und Äther geschüttelt, die wässerige Lösung abgetrennt und die Ätherlösung nochmals mit 2n Essigsäure ausgezogen.
Die vereinig ten sauren wässerigen Lösungen werden nach dem Waschen mit- Äther alkalisch gemacht, das sich ab scheidende Öl in Äther aufgenommen und der Äther nach dem Trocknen verdampft. Der Rückstand ergibt, im Hochvakuum destilliert, ein unter 0,03 mm bei 120-127 C siedendes Öl, das sich nach kurzer Zeit zu Kristallen verfestigt. Diese schmelzen, aus 75 a/aigem Äthanol umkristallisiert, bei 75-80 C und stellen das 2,3-Diphenyl-piperidin dar. Die neue Ver bindung ist leicht löslich in Benzol, Äther, Aceton und Petroläther, wenig in Wasser.
Aus der Base kann mit Hilfe von ätherischer Salzsäure das bei 218 C schmel zende Hydrochlorid hergestellt werden. Dieses löst sich in Äthanol und Chloroform kalt gut, wenig aber in Äther und Petroläther. In der gleichen Weise kann man das Fumarat und das Citrat herstellen.
Das Methansulfonat erhält man durch Umsetzen von 2,3-Diphenyl-piperidin mit Methansulfosäure in Aceton.
<I>Beispiel 2</I> 40 g 1-Phenyl-2-(3',4'-dimethoxy-phenyl)-2-oxo- äthan werden in 70 cm3 Dioxan mit 1,2 g festem Na triummethylat versetzt. Unter Turbinieren lässt man nun 8,1g Acryls,äurenitril in 20 cm3 abs. Dioxan zu tropfen. Die Temperatur steigt von selbst auf 40 C an. Nach 24 Stunden setzt man 2 cm3 Eisessig zu und dann 25 cm3 Wasser, rührt gut und verdampft dann im Vakuum.
Der Rückstand wird in Benzol ge löst und einmal mit verdünnter Natriumcarbonat- lösung gewaschen. Nach dem Trocknen über Natrium sulfat wird das Benzol abdestilliert. Der Rückstand stellt das 4-Phenyl-5-(3',4'-dimethoxy-phenyl)-5-oxo- pentansäurenitril dar.
17 g dieses Nitrils werden in 150 cm3 abs. Äthanol mit einigen Spatelspitzen Raney-Kobalt versetzt und das Ganze 51/2 Stunden unter 80 atü Wasserstoff druck bei 85-87 C geschüttelt. Nach dem Abkühlen wird der Katalysator abgesaugt, die Lösung im Va kuum eingeengt und der Rückstand mit 2n Essigsäure und Äther gut geschüttelt. Die ätherische Lösung wird abgetrennt und die wässerige saure Lösung mit konz. Kaliumcarbonatlösung alkalisch gemacht.
Das sich abscheidende Öl wird in Äther aufgenommen, der Äther nach dem Trocknen verdampft und der Rück stand im Hochvakuum destilliert. Man erhält so 11 bis 12 g des unter 0,08 mm bei 170 bis 173 C sieden den 2-(3',4'-Dimethoxy-phenyl)-3-phenyl-piperidins.
In gleicher Weise, wie in den Beispielen 1 und 2 beschrieben, gewinnt man weiter die folgenden Piperidine der Formel 1.
EMI0002.0094
Arl <SEP> Are <SEP> R <SEP> Phys. <SEP> Konstanten
<tb> p <SEP> CH30-C6H4 <SEP> CA <SEP> <B>l;-</B> <SEP> H <SEP> HCl-Salz
<tb> Schmp. <SEP> 233-235<B>0</B> <SEP> C
<tb> <B>m</B> <SEP> CH30-C.Hr- <SEP> C6HS <SEP> H <SEP> HCl-Salz
<tb> Schmp. <SEP> 183-186 <SEP> C
<tb> p <SEP> C.H. <SEP> CH?O-C.H<B>j-</B> <SEP> C <SEP> 6H5- <SEP> H <SEP> HCl-Salz
<tb> Schmp. <SEP> 177-l78 <SEP> C
<tb> p <SEP> HO-C6H<I>r-</I> <SEP> C6H- <SEP> H <SEP> HCl-Salz
<tb> 255-259 <SEP> C
<tb> C6H.- <SEP> p <SEP> CH30-C.H4 <SEP> H <SEP> HCl-Salz
<tb> 233-235 <SEP> C <I>Beispiel 3</I> 15 g 2,3-Diphenyl-piperidin, enthalten z.
B. nach Beispiel 1, werden in 130 cm3 abs. Benzol mit 8,7 g wasserfreiem Kaliumcarbonat bei 80 C turbiniert. Dazu werden unter stetigem Rühren 8,4g Allyl- bromid in 20 cm3 abs. Benzol innerhalb einer Stunde zugetropft. Anschliessend rührt man noch 5 Stunden bei 80 C, versetzt dann nach dem Abkühlen mit 200 cm3 Wasser und trennt die Benzollösung ab. Diese wird über Kaliumcarbonat getrocknet und dann eingeengt.
Der Rückstand wird im Hochvakuum destilliert, wobei das 1-Allyl-2,3-diphenyl-piperidin unter 0,03 mm bei 120-125 C übergeht. Man erhält 14,3 g an Base. Das Hydrochlorid des 1-Allyl-2,3- diphenyl-piperidins kann in Äther mit Hilfe von äthe rischer Salzsäure hergestellt werden. Nach dem Um- kristallisieren aus abs. Äthanol/Äther schmilzt das Salz bei 171-173 C.
In gleicher Weise, wie im Beispiel 3 beschrieben, gewinnt man weiter die folgenden Piperidine der For mel I.
EMI0003.0027
Process for the production of new piperidines The invention relates to a process for the production of new piperidines of the formula
EMI0001.0005
where Ar, and Ar. optionally represent phenyl radicals having first class substituents.
It has been found that the 2,3-diaryl-piperidines defined in Formula 1 have analgesic and sedative properties.
The new piperidines are obtained according to the invention by adding a compound of the formula
EMI0001.0012
treated with a reducing agent.
Suitable reducing agents are, for example, mild catalysts and hydrogen, such as. B. Raney nickel, copper or cobalt catalysts and hydrogen.
The reduction is preferably carried out in a solvent, e.g. B. in ethanol. It can be assumed that the nitrile group is initially converted into the aminomethyl group reductively, which is then. closes the ring with the carbonyl group to form a tetrahydropyridine; the latter is then converted into the piperidine derivative.
The 4,5-diaryl-5-oxo-pentanoic acid nitriles to be used as starting materials can easily be made from the corresponding deoxybenzoins and acrylamide [cf. A.
D. Campbell et al., J. Chem. Soc. 1956, p.960.ff.]. You can react in this way: 4.5 diphenyl-5-oxo-pentanoic acid nitrile, 4- (4'-methoxyphenyl) -5 = phenyl-5-oxo-pentanoic acid nitrile, 4,5-bis- (3 ' -methoxy-phenyl) -5-oxo-pentanoic acid nitrile, 4,5-bis- (4'-methyl-phenyl) -5-oxo-pentanoic acid nitrile, etc.
to the corresponding 2,3-diphenylpiperidine, 2-phenyl-3- (4'-methoxyphenyl) -piperidine, 2,3-bis- (3'-methoxyphenyl) -piperidine, 2,3-bis- (4 'Methyl-phenyl) -piperidine etc.
If desired, a saturated or unsaturated alkyl or aralkyl radical R, which can be interrupted by oxygen or sulfur or NH or N-alkyl, can also be introduced into a 2,3-diaryl-piperidine obtained in this way. The introduction of such a residue takes place, for.
B. with the help of reac tion capable esters of corresponding alkanols or aralkanols. You can get effective analgesics if you switch to the 1 position e.g. B. aliphatic radicals, such as a methyl, ethyl, propyl or allyl radical, introduces.
Effective analgesics are also obtained if, instead of the alkyl radical, an aralkyl radical, e.g. B. introduces the benzyl radical, the benzhydryl radical, the Phenäthylres.t or the 4-aminophenäthylrest.
Analgesics with a particularly good effect are obtained if one tert in the 1-position of the 2,3-diaryl-piperidines. Introduces aminoalkyl radical.
For example, if the 2,3-diphenyl-piperidine is reacted with dimethyl-amino-ethyl chloride, diethyl-amino-ethyl chloride, pyrrolidino-ethyl chloride, dimethyl-amino-propyl chloride, diethyl-amino-ethyl chloride, pyrrolidino-propyl chloride, piperidino-propyl chloride, so one arrives at substances whose salts dissolve in water with a practically neutral reaction.
The 1-unsubstituted and the 1-substituted diarylpiperidines do not differ significantly in their mode of action. By introducing a substituent R one only gets an amplification of the analgesic effect.
The piperidines of the formula I thus obtained can, if desired, be converted into their acid salts. The following are suitable for the formation of acid salts: organic acids, such as B. sulfuric acid, hydrochloric acid, phosphoric acid and the like. a. m., or organic acids, such as.
B. glycolic acid, citric acid, maleic acid, fumaric acid, tartaric acid, salicylic acid, methylene - bis - salicylic acid, p - aminosacylic acid, methanesulfonic acid, ethane disulfonic acid, ethionic acid, etc.
<I> Example 1 </I> 36 g of 4,5-diphenyl-5-oxo-pentanoic acid- (1) -nitrile are in, 360 cm3 abs. Ethanol shaken in the presence of deactivated Raney nickel for 3 hours at 80 C under 80 atm. Hydrogen pressure. After standing overnight, the catalyst is filtered off with suction, the filtrate is treated with charcoal, filtered and then concentrated in vacuo. The residue is shaken with 100 cm3 of 2N acetic acid and ether, the aqueous solution is separated off and the ethereal solution is extracted again with 2N acetic acid.
The combined acidic aqueous solutions are made alkaline after washing with ether, the separating oil is absorbed in ether and the ether evaporates after drying. The residue, distilled in a high vacuum, gives an oil boiling below 0.03 mm at 120-127 ° C., which solidifies to form crystals after a short time. This melt, recrystallized from 75 a / aigem ethanol, at 75-80 C and represent the 2,3-diphenyl-piperidine. The new connection is easily soluble in benzene, ether, acetone and petroleum ether, little in water.
The hydrochloride, which melts at 218 C, can be produced from the base with the aid of ethereal hydrochloric acid. This dissolves well in cold ethanol and chloroform, but little in ether and petroleum ether. The fumarate and citrate can be produced in the same way.
The methanesulfonate is obtained by reacting 2,3-diphenylpiperidine with methanesulfonic acid in acetone.
<I> Example 2 </I> 40 g of 1-phenyl-2- (3 ', 4'-dimethoxyphenyl) -2-oxoethane are mixed with 1.2 g of solid sodium methylate in 70 cm3 of dioxane. 8.1 g of acrylic, acid nitrile in 20 cm3 abs. Dioxane to drip. The temperature rises to 40 C by itself. After 24 hours, add 2 cm3 of glacial acetic acid and then 25 cm3 of water, stir well and then evaporate in vacuo.
The residue is dissolved in benzene and washed once with dilute sodium carbonate solution. After drying over sodium sulfate, the benzene is distilled off. The residue is 4-phenyl-5- (3 ', 4'-dimethoxyphenyl) -5-oxopentanoic acid nitrile.
17 g of this nitrile are abs in 150 cm3. Ethanol mixed with a few spatula tips Raney cobalt and the whole thing was shaken for 51/2 hours under 80 atm. Hydrogen pressure at 85-87 C. After cooling, the catalyst is filtered off with suction, the solution is concentrated in vacuo and the residue is shaken well with 2N acetic acid and ether. The ethereal solution is separated off and the aqueous acidic solution with conc. Potassium carbonate solution made alkaline.
The oil which separates out is taken up in ether, the ether is evaporated after drying and the residue is distilled in a high vacuum. 11 to 12 g of 2- (3 ', 4'-dimethoxyphenyl) -3-phenyl-piperidine boiling below 0.08 mm at 170 to 173 ° C. are thus obtained.
The following piperidines of the formula 1 are also obtained in the same way as described in Examples 1 and 2.
EMI0002.0094
Arl <SEP> Are <SEP> R <SEP> Phys. <SEP> constants
<tb> p <SEP> CH30-C6H4 <SEP> CA <SEP> <B> l; - </B> <SEP> H <SEP> HCl salt
<tb> MP. <SEP> 233-235 <B> 0 </B> <SEP> C
<tb> <B> m </B> <SEP> CH30-C.Hr- <SEP> C6HS <SEP> H <SEP> HCl salt
<tb> Mp. <SEP> 183-186 <SEP> C
<tb> p <SEP> C.H. <SEP> CH? O-C.H <B> j- </B> <SEP> C <SEP> 6H5- <SEP> H <SEP> HCl salt
<tb> M.p. <SEP> 177-178 <SEP> C
<tb> p <SEP> HO-C6H <I> r- </I> <SEP> C6H- <SEP> H <SEP> HCl salt
<tb> 255-259 <SEP> C
<tb> C6H.- <SEP> p <SEP> CH30-C.H4 <SEP> H <SEP> HCl salt
<tb> 233-235 <SEP> C <I> Example 3 </I> 15 g of 2,3-diphenylpiperidine, contain e.g.
B. according to Example 1, abs in 130 cm3. Benzene turbined with 8.7 g of anhydrous potassium carbonate at 80 C. For this purpose, 8.4 g of allyl bromide in 20 cm3 of abs. Benzene was added dropwise within an hour. The mixture is then stirred for a further 5 hours at 80 ° C., after which, after cooling, 200 cm3 of water are added and the benzene solution is separated off. This is dried over potassium carbonate and then concentrated.
The residue is distilled in a high vacuum, the 1-allyl-2,3-diphenylpiperidine passing under 0.03 mm at 120-125 ° C. 14.3 g of base are obtained. The hydrochloride of 1-allyl-2,3-diphenyl-piperidine can be prepared in ether with the aid of ethereal hydrochloric acid. After recrystallization from abs. Ethanol / ether melts the salt at 171-173 C.
In the same way as described in Example 3, the following piperidines of the formula I are obtained.
EMI0003.0027
Claims (1)
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CH359703T | 1957-09-06 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CH359703A true CH359703A (en) | 1962-01-31 |
Family
ID=4512355
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CH359703D CH359703A (en) | 1957-09-06 | 1957-09-06 | Process for the production of new piperidines |
Country Status (1)
| Country | Link |
|---|---|
| CH (1) | CH359703A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468893A (en) * | 1966-03-14 | 1969-09-23 | Ciba Geigy Corp | 1-substituted-diphenyl-azacycloalkenes |
| JP2023537062A (en) * | 2020-08-07 | 2023-08-30 | キラ ファーマシューティカルズ (スージョウ) リミテッド | Compounds as C5aR inhibitors |
-
1957
- 1957-09-06 CH CH359703D patent/CH359703A/en unknown
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US3468893A (en) * | 1966-03-14 | 1969-09-23 | Ciba Geigy Corp | 1-substituted-diphenyl-azacycloalkenes |
| JP2023537062A (en) * | 2020-08-07 | 2023-08-30 | キラ ファーマシューティカルズ (スージョウ) リミテッド | Compounds as C5aR inhibitors |
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