DE870700C - Process for the production of basic ketones - Google Patents

Process for the production of basic ketones

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Publication number
DE870700C
DE870700C DEF3655D DEF0003655D DE870700C DE 870700 C DE870700 C DE 870700C DE F3655 D DEF3655 D DE F3655D DE F0003655 D DEF0003655 D DE F0003655D DE 870700 C DE870700 C DE 870700C
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Germany
Prior art keywords
basic
ketones
production
added
basic ketones
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Expired
Application number
DEF3655D
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German (de)
Inventor
Max Dr Bockmuehl
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Hoechst AG
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Hoechst AG
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Publication date
Application filed by Hoechst AG filed Critical Hoechst AG
Priority to DEF3655D priority Critical patent/DE870700C/en
Application granted granted Critical
Publication of DE870700C publication Critical patent/DE870700C/en
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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D295/00Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms
    • C07D295/04Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms
    • C07D295/10Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by doubly bound oxygen or sulphur atoms
    • C07D295/104Heterocyclic compounds containing polymethylene-imine rings with at least five ring members, 3-azabicyclo [3.2.2] nonane, piperazine, morpholine or thiomorpholine rings, having only hydrogen atoms directly attached to the ring carbon atoms with substituted hydrocarbon radicals attached to ring nitrogen atoms substituted by doubly bound oxygen or sulphur atoms with the ring nitrogen atoms and the doubly bound oxygen or sulfur atoms attached to the same carbon chain, which is not interrupted by carbocyclic rings

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  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Hydrogenated Pyridines (AREA)

Description

Verfahren zur Herstellung von basischen Ketonen In der Patentschrift 865 314 ist ein Verfahren zur Herstellung von basischen Ketonen beschrieben, welches darin besteht, daß man basisch substituierte Diarylacetonitrile der allgemeinen Formel in der R1 und R2 Arylreste bedeuten, die auch unter sich verbunden sein können, und R3 einen basisch substituierten Alkylrest bedeutet, mit Organomagnesiumverbindungen in basische Ketone überführt.Process for the preparation of basic ketones In the patent specification 865 314 a process for the preparation of basic ketones is described, which consists in that one basic substituted diarylacetonitriles of the general formula in which R1 and R2 denote aryl radicals, which can also be linked to one another, and R3 denotes a basic substituted alkyl radical, converted into basic ketones with organomagnesium compounds.

In Weiterverfolgung dieses Arbeitsgebietes wurde nun gefunden, daß man zu den gleichen Verbindungen gelangen kann, wenn man statt der trisubstituierten Säurenitrile die entsprechenden Amide mit Organomagnesiumverbindungen zur Umsetzung bringt.In pursuing this area of work it has now been found that you can get to the same compounds if you instead of the trisubstituted Acid nitrile the corresponding amides with organomagnesium compounds for implementation brings.

Das Verfahren schafft die Möglichkeit, daß im Falle der Verwendung von trisubstituierten Estern, welche nach der Patentschrift 711 o69 herstellbar sind, die Überführung dieser Substanzen in die zugehörigen Säurenitrile nicht erforderlich ist, daß man vielmehr mit gleichem Erfolg die aus den Estern leicht herstellbaren Säureamide verwenden kann.The procedure creates the possibility that in case of use of trisubstituted esters, which can be prepared according to patent 711 069 are, the conversion of these substances into the associated acid nitriles is not necessary is that one can rather with the same success those easily prepared from the esters Can use acid amides.

Man hat bereits durch Grignardierung von Säurc.-amiden Ketone hergestellt. Die erfindungsgemäß a1.3 Ausgangsstoffe verwendeten basischen Diarylmethanverbindungen, deren Methankohlenstoff die Säureamidgruppe enthält, reagieren indessen im allgemeinen außerordentlich träge, vermutlich infolge sterischer Behinderung durch die Arylgruppen. Es war dem- . gegenüber nicht vorauszusehen, daß die Grignardierung dieser Ausgangsstoffe glatt zum Ziele führen würde.Ketones have already been produced by the Grignardation of acid amides. The basic diarylmethane compounds used according to the invention a1.3 starting materials, whose methane carbon contains the acid amide group, however, generally react extraordinary sluggish, presumably due to steric hindrance from the aryl groups. It was then- . compared to not foreseeing that the Grignardation of these starting materials will be smooth would lead to the goal.

Die neuen Ketone haben eine starke analgetische und spasmolytische Wirkung und sollen in der Terapie verwendet werden. Beispiele i. i, i-Diphenyl-i-piperidinoäthylbutanon-2-chlörhydrat Zu einer Grignardlösung, hergestellt aus 7,2 g Mg, ioo ccm Äther und 32,7 g Bromäthyl, werden 16,1 g i,i-Diphenyl-i-piperidinoäthylacetamid; aus dem Nitril durch Aufspaltung mit Schwefelsäure gewonnen, (Schmelzpunkt 186°) portionsweise gegeben. Sobald die lebhaft einsetzende Reaktion nachläßt, werden ioo ccm Toluol zugegeben, der Äther abdestilliert und die Toluollösung 4 Stunden im Ölbad gekocht, wobei sich ein grauer Niederschlag ausscheidet. Das Toluol wird abgegossen und der graue Brei in Zoo ccm 2 n-Salzsäure eingetragen. Das Genfisch wird i Stunde auf dem Dampfbad erhitzt, es haben sich dann nach dem Abkühlen drei Schichten gebildet, wovon die mittlere beim Stehen über Nacht teilweise kristallisiert. Die Kristalle werden abgesaugt, in wenig Aceton gelöst und mit Äther bis fast zur Trübung versetzt. Dabei kristallisieren 5,5g weiße Kristalle aus. Die hieraus gewonne freie Base des i, i-Diphenyl-i-piperidinoäthyl-butanon-2 schmilzt nach dem Umkristallisieren aus wenig Hexahydrobenzol bei 77 bis 77,5°. Das Chlorhydrat schmilzt bei 181 bis 182°. 2. 1, 1-Diphenyl-i-dimethylaminoäthylbutanon-2-chlorhydrat Zu einer Grignardlösung aus 14,5 g Mg, loo ccm Äther und 65,5g Bromäthyl werden 28,2 g (i/10 Mol) Diphenyl-dimethylaminoäthylacetamid(Schmelzpunkt 14o bis i4r°) inkleinen Portionen gegeben. Es tritt eine lebhafte Reaktion ein. Dann werden 15o ccm Toluol zugegeben, und wie in Beispiel i angegeben verfahren. Das erhaltene i, i-Diphenyl-i-dimethylaminoäthylbutanon-2 siedet unter ii mm Druck bei Zoo bis 2o5° als hellgelbe Flüssigkeit. Die Ausbeute beträgt ig g. Das Chlorhydrat der Substanz schmilzt aus Alkohol-Äther umgelöst bei 173 bis i75°.The new ketones have a strong analgesic and spasmolytic effect and are intended to be used in therapy. Examples i. i, i-Diphenyl-i-piperidinoethylbutanone-2-chlorohydrate. 16.1 g of i, i-diphenyl-i-piperidinoethyl acetamide are added to a Grignard solution, prepared from 7.2 g of Mg, 100 cc of ether and 32.7 g of bromoethyl; obtained from the nitrile by splitting with sulfuric acid, (melting point 186 °) added in portions. As soon as the reaction, which begins lively, subsides, 100 cc of toluene are added, the ether is distilled off and the toluene solution is boiled in an oil bath for 4 hours, a gray precipitate separating out. The toluene is poured off and the gray pulp is added to zoo ccm 2N hydrochloric acid. The Geneva table is heated on the steam bath for one hour; after cooling, three layers have formed, of which the middle one partially crystallizes when standing overnight. The crystals are filtered off with suction, dissolved in a little acetone and ether is added until they are almost cloudy. 5.5 g of white crystals crystallize out. The free base of i, i-diphenyl-i-piperidinoethyl-butanone-2 obtained from this melts after recrystallization from a little hexahydrobenzene at 77 to 77.5 °. The chlorohydrate melts at 181 to 182 °. 2.1, 1-Diphenyl-i-dimethylaminoethylbutanone-2-chlorohydrate. 28.2 g (1/10 mol) of diphenyldimethylaminoethyl acetamide (melting point 14o up to i4r °) given in small portions. There is a vigorous reaction. 150 cc of toluene are then added and the procedure described in Example i is followed. The obtained i, i-diphenyl-i-dimethylaminoethylbutanone-2 boils under ii mm pressure at zoo to 2o5 ° as a pale yellow liquid. The yield is ig g. The hydrochloride of the substance melts from alcohol-ether dissolved at 173 to 175 °.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von basischen Ketonen gemäß Patent 865 314, dadurch gekennzeichnet, daß man statt basisch substituierter Diarylacetonitrüe die entsprechenden Säureamide der allgemeinen Formel in der R1 und R2 Arylreste bedeuten, die auch unter sich verbunden sein können und R3 einen basisch substituierten Alkylrest bedeutet, mit Organomagnesiumverbindungen umsetzt. Angezogene Druckschriften: Chemisches Zentralblatt 1926 11, 754; Chemisches Zentralblatt 1930 1, 2,721; deutsche Patentschriften Nr. 651543, 681849-PATENT CLAIM: Process for the preparation of basic ketones according to patent 865 314, characterized in that the corresponding acid amides of the general formula are used instead of basic substituted diarylacetonitrile in which R1 and R2 are aryl radicals, which can also be linked to one another and R3 is a basic substituted alkyl radical, is reacted with organomagnesium compounds. Cited publications: Chemisches Zentralblatt 1926 11, 754; Chemisches Zentralblatt 1930 1, 2.721; German patents No. 651543, 681849-
DEF3655D 1942-05-02 1942-05-02 Process for the production of basic ketones Expired DE870700C (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DEF3655D DE870700C (en) 1942-05-02 1942-05-02 Process for the production of basic ketones

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEF3655D DE870700C (en) 1942-05-02 1942-05-02 Process for the production of basic ketones

Publications (1)

Publication Number Publication Date
DE870700C true DE870700C (en) 1953-03-16

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DEF3655D Expired DE870700C (en) 1942-05-02 1942-05-02 Process for the production of basic ketones

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Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE651543C (en) * 1936-03-21 1937-10-16 Chemische Werke Vorm H & E Alb Process for the preparation of ªÏ-dimethylaminoalkylaryl ketones
DE681849C (en) * 1936-08-11 1939-10-03 Albert Ag Chem Werke Process for the preparation of dialkylaminoalkylaryl ketones

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE651543C (en) * 1936-03-21 1937-10-16 Chemische Werke Vorm H & E Alb Process for the preparation of ªÏ-dimethylaminoalkylaryl ketones
DE681849C (en) * 1936-08-11 1939-10-03 Albert Ag Chem Werke Process for the preparation of dialkylaminoalkylaryl ketones

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