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DE830192C - Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3) - Google Patents

Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3)

Info

Publication number
DE830192C
DE830192C DEL631A DEL0000631A DE830192C DE 830192 C DE830192 C DE 830192C DE L631 A DEL631 A DE L631A DE L0000631 A DEL0000631 A DE L0000631A DE 830192 C DE830192 C DE 830192C
Authority
DE
Germany
Prior art keywords
benzyl
tetrahydroisoquinolone
preparation
cyclohexenylacetonitrile
acetonitrile
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.)
Expired
Application number
DEL631A
Other languages
German (de)
Inventor
Dr Hans Henecka
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.)
Bayer AG
Original Assignee
Bayer AG
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
Application filed by Bayer AG filed Critical Bayer AG
Priority to DEL631A priority Critical patent/DE830192C/en
Application granted granted Critical
Publication of DE830192C publication Critical patent/DE830192C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D217/00Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
    • C07D217/22Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached to carbon atoms of the nitrogen-containing ring
    • C07D217/24Oxygen atoms

Landscapes

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

Description

Verfahren zur Herstellung von 1-Benzyl-bz-tetrahydroisochinolon-(3) Das zur wntliese von Substanzen der :\forphin- reilie wichtige t-F3enzyl-liz-tetraliydroisocliinolin und seilw i111 1>enzylrest methoxylierten Derivate \varetl bisher nur durch komplizierte metallorgani- sche Synthesen zugänglich. So erhält man nach G r e @@- e uii(l \t <i n (1 o ii . Chemische Berichte, IM. 8 i . S. 279 (i y48) durch Einwirkung von 13enzylmagnesiumcblori<1 auf \t--#lethyl-bz-tetra- liyctroisocliiiioliitiunijodid <las N-Methyl-i, 2-di- hydroderIvat des i-Iieiizyl-bz-tetrahydroisochino- lins, wiiliretiil die Verbindung selbst erhalten wurde durch Einwirkung von Benzaldehyd auf i-Lithium- ltz-tetralivdroisocliitioliii und Reduktion des zu- nächst entstandenen Carbinols (G r e w e , NI o ii - d o n und N o l t e . Liebigs Annalen der Chemie, 13d. 3i,@, S. 161 (19:I9). In \veseiitlicli einfacherer und auch technisch <Ittrchtührl@arer Weise gelangt man zum i-13enzyl- 1>z-tetrahydroisochinolin und seinen im Benzylrest ttletlloxvliertett Derivaten, wenn man i-Benzvl-bz- tetraliydroisocliinolon-(3) in das entsprechende 3-Halogenderivat überführt und dieses zum i-Ben- zyl-bz-tetrahydroisochinolin reduziert. Das i-Ben- zyl-bz-tetrah_vdroisochinolon-(3) kann man erhalten, indem niail das aus Cvclohexanon und Phenyl- essigester durch Esterkondensation herstellhare i-P'lietiacetylcyclohexanoti-(2) mit Cyanacetamid kondensiert zu i-Benzyl-bz-tetrahydro-4-cyaniso- c'hitiolon-(3) und die Cyangruppe abspaltet. Es wurde nun gefunden, daß man das i-Benzyl- liz-tetrahydroisoctiinolon-(3) auch dadurch erhalten kann, daß man Cyclohexenylacetonitril mit Phen- acetylchlorid unter dem Einfluß von Aluminium- chlorid kondensiert zu i-Phenacetylcyclohexenyl- 2-acetonitril und dieses durch Behandeln mit star- ken Satiren, wie Phosphorsäure, umlagert in das i-I3enzyl-1>z-tetraliydroisochinolott-(3). Das erhaltene Produkt ist ein Zwischenprodukt für morphinähnliche pharmazeutische Verbindungen.Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3) The wntliese of substances of: \ forphin- reilie important t-F3enzyl-liz-tetraliydroisocliinolin and seilw i111 1> enzyl radical methoxylated derivatives \ varetl so far only through complicated organometallic cal syntheses accessible. So you get after G re @@ - e uii (l \ t <in (1 o ii. Chemical reports, IN THE. 8 i. P. 279 (i y48) by the action of 13enzylmagnesium corlori <1 on \ t - # lethyl-bz-tetra- liyctroisocliiiioliitiunijodid <las N-methyl-i, 2-di- hydroderIvate of the i-iizyl-bz-tetrahydroisochino- lins how the connection itself was maintained by the action of benzaldehyde on i-lithium ltz-tetralivdroisocliitioliii and reduction of the additional next formed carbinols (G rewe, NI o ii - don and N olte. Liebig's annals of chemistry, 13d. 3i, @, p. 161 (19: 19). In \ veseiitlicli simpler and also technical <Ittrchtührl @ arer way one arrives at the i-13enzyl- 1> z-tetrahydroisoquinoline and its in the benzyl radical ttletlloxvliertett derivatives, if one i-Benzvl-bz- tetraliydroisocliinolon- (3) into the corresponding 3-halogen derivative transferred and this to i-Ben- zyl-bz-tetrahydroisoquinoline reduced. The i-Ben- zyl-bz-tetrah_vdroisoquinolon- (3) can be obtained in that the mixture of cyclohexanone and phenyl acetic esters produced by ester condensation i-P'lietiacetylcyclohexanoti- (2) with cyanoacetamide condensed to i-benzyl-bz-tetrahydro-4-cyaniso- cleaves off c'hitiolon- (3) and the cyano group. It has now been found that the i-benzyl- liz-tetrahydroisoctiinolon- (3) also obtained thereby can that you cyclohexenylacetonitrile with phen acetyl chloride under the influence of aluminum chloride condenses to i-phenacetylcyclohexenyl- 2-acetonitrile and this by treating with strong ken satires, such as phosphoric acid, rearranged into the i-13enzyl-1> z-tetraliydroisoquinolot- (3). The product obtained is an intermediate for morphine-like pharmaceutical compounds.

Beispiel Zu einem Gemisch von 135g Aluminiumchlorid und 3oo ccm Schwefelkohlenstoff tropft man bei - 15° innerhalb 6 bis 7 Stunden ein Gemisch von 77,5 g Phenacetylclilorid und 6o,5 g Cyclohexenylacetonitril. Nach 12Stündigem Ruhren bei Zimmertemperatur gießt man auf Eis, trennt die C S, Lösung ab, wäscht neutral und reinigt den Abdampf- rückstand durch fraktionierte Destillation. Das so erhaltene 1-I'henacetvlc@clohexenvl-2-acetonitril stellt ein gelbes, dickflüssiges 01 dar, das bei 0,4 rnm bei r73° siedet. Behandelt man dieses t-Plietiacetylcycloliexenyl- 2-acetotiitril mit <1cr drei- bis \ iet-fachen Menge sirupöser Phosphorsäure ';= his "/i Stunde auf dem Wasserbad, so fällt beint Verdünnen mit Wasser das 1-ßenzyl-1>z-tetrah@droisochinolon-(3) fein- kristallin atts. N@tcli (letzt Utnlösen aus Nfethatiol feine hristä llchen vom F. 2d; . EXAMPLE A mixture of 77.5 g of phenacetyl chloride and 60.5 g of cyclohexenylacetonitrile is added dropwise to a mixture of 135 g of aluminum chloride and 300 cc of carbon disulfide at -15 ° over the course of 6 to 7 hours. After stirring for 12 hours at room temperature, it is poured onto ice, the CS is separated, Solution, washes neutral and cleans the evaporation residue from fractional distillation. That so obtained 1-I'henacetvlc @ clohexenvl-2-acetonitrile represents a yellow, viscous 01 , which at 0.4 mm boils at r73 °. If you treat this t-Plietiacetylcycloliexenyl- 2-acetotitrile with <1cr three to three times the amount syrupy phosphoric acid '; = his "/ i hour on the Water bath, so falls beint diluting with water the 1-benzyl-1> z-tetrah @ droisoquinolone- (3) fine- crystalline atts. N @ tcli (last dissolution from Nfethatiol fine crystals from F. 2d; .

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von 1-Benzyl-bztetrahydroisochinolon-(3), dadurch gekennzeichriet, daß man Cyclohexenylacetonitril mit Phenacetylchlorid unter (lern I:influß von A1 C13 kondensiert zti 1-PlienaCetylcycloliexetiyl-2-acetonitril und dieses durch Erwärmen mit Phosphorsäure umlagert.PATENT CLAIM: Process for the production of 1-benzyl-bztetrahydroisoquinolone- (3), gekennzeichriet that one under cyclohexenylacetonitrile with phenacetyl chloride (Learn I: Influence of A1 C13 condenses zti 1-PlienaCetylcycloliexetiyl-2-acetonitrile and this is rearranged by heating with phosphoric acid.
DEL631A 1949-12-20 1949-12-20 Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3) Expired DE830192C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEL631A DE830192C (en) 1949-12-20 1949-12-20 Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEL631A DE830192C (en) 1949-12-20 1949-12-20 Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3)

Publications (1)

Publication Number Publication Date
DE830192C true DE830192C (en) 1952-02-04

Family

ID=7254973

Family Applications (1)

Application Number Title Priority Date Filing Date
DEL631A Expired DE830192C (en) 1949-12-20 1949-12-20 Process for the preparation of 1-benzyl-bz-tetrahydroisoquinolone- (3)

Country Status (1)

Country Link
DE (1) DE830192C (en)

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