DE725536C - Process for the preparation of tetrahydroisoquinoline compounds - Google Patents

Process for the preparation of tetrahydroisoquinoline compounds

Info

Publication number
DE725536C
DE725536C DET54493D DET0054493D DE725536C DE 725536 C DE725536 C DE 725536C DE T54493 D DET54493 D DE T54493D DE T0054493 D DET0054493 D DE T0054493D DE 725536 C DE725536 C DE 725536C
Authority
DE
Germany
Prior art keywords
tetrahydroisoquinoline
compounds
aralkyl
preparation
ether
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
DET54493D
Other languages
German (de)
Inventor
Dr Med Fritz Kuelz
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.)
Troponwerke Dinklage and Co
Original Assignee
Troponwerke Dinklage and Co
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 Troponwerke Dinklage and Co filed Critical Troponwerke Dinklage and Co
Application granted granted Critical
Publication of DE725536C publication Critical patent/DE725536C/en
Expired legal-status Critical Current

Links

Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D217/00Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems
    • C07D217/02Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with only hydrogen atoms or radicals containing only carbon and hydrogen atoms, directly attached to carbon atoms of the nitrogen-containing ring; Alkylene-bis-isoquinolines
    • C07D217/04Heterocyclic compounds containing isoquinoline or hydrogenated isoquinoline ring systems with only hydrogen atoms or radicals containing only carbon and hydrogen atoms, directly attached to carbon atoms of the nitrogen-containing ring; Alkylene-bis-isoquinolines with hydrocarbon or substituted hydrocarbon radicals attached to the ring nitrogen atom

Landscapes

  • Chemical & Material Sciences (AREA)
  • Organic Chemistry (AREA)
  • Pharmaceuticals Containing Other Organic And Inorganic Compounds (AREA)
  • Other In-Based Heterocyclic Compounds (AREA)

Description

Verfahren zur Herstellung von Tetrahydroisochinolinverbindungen Das Hauptpatent 707 705 hat ein Verfahren für die Herstellung von papaverinartig wirkenden; am Stickstoffatom durch einen Aralkyl.rest substituierten Tetrahydroisochinolinverbindungen der allgemeinen Formel in der ia größer als r ist, zum Gegenstand. Die Herstellung dieser Verbindungen erfolgt dadurch, daß man in an sich üblicher Weise an das Stickstoffatom eines Tetrahydroisochinolins den gewünschten Aralkylrest anlagert oder auf ein Isöchiriolin ein geeignetes Aralkylhalogenid einwirken läßt und die hierbei gebildete quaternäre Base zu der entsprechenden Tetrahydroisochinolinverbindung hydriert. Die Anlagerung des Aralkylrestes an das- Stickstoffatom des Tetrahydroisochinolins kann z. B. dadurch erfolgen, daß man auf ein Tetrahydroisochinolin ein Aralkylhalogenid oder bei Gegenwart von leicht oxydierbaren Stoffen, wie Ameisensäure oder Isopropylalkohol, einen Aralkylaldehyd oder ein Aralkylketon einwirken läßt. Man kann, nach: dem Verfahren des Hauptpatents auch von Isochinolinverbindungen und bzw. oder Aralkylverbindungen ausgehen, die im Kern und bzw. oder in den Methylengruppen z. B. durch Alkyl-, Aryl-, Aralkyl-, Alkoxy-, Alkylendioxy-oder Hydroxylgxuppen substituiert sind.Process for the production of tetrahydroisoquinoline compounds The main patent 707 705 has a process for the production of papaverine-like acting; Tetrahydroisoquinoline compounds of the general formula which are substituted on the nitrogen atom by an aralkyl radical in which is generally greater than r, to the subject. These compounds are prepared by adding the desired aralkyl radical to the nitrogen atom of a tetrahydroisoquinoline in a conventional manner or by allowing a suitable aralkyl halide to act on an isochirioline and hydrogenating the quaternary base formed to the corresponding tetrahydroisoquinoline compound. The addition of the aralkyl radical to the nitrogen atom of the tetrahydroisoquinoline can, for. B. be done by allowing an aralkyl halide to act on a tetrahydroisoquinoline or in the presence of easily oxidizable substances such as formic acid or isopropyl alcohol, an aralkylaldehyde or an aralkyl ketone. You can, according to: the process of the main patent also from isoquinoline compounds and / or aralkyl compounds, which z in the core and / or in the methylene groups. B. substituted by alkyl, aryl, aralkyl, alkoxy, alkylenedioxy or hydroxyl groups.

Es wurde nun gefunden, daß man die Verbindungen des Hauptpatents auch dadurch herstellen kann, daß man ein Dihydroisochinolin mit einem geeigneten Aralkylhalogenid oder einem anderen Abkömmling eines Aralkylalkohols, z. B. einem Benzol- oder Toluolsulfonsäureester eines Arallcylalkohols, umsetzt und das Umsetzungsprodukt im Pyridinring hydriert.It has now been found that the compounds of the main patent can also be used can be prepared by a dihydroisoquinoline with a suitable aralkyl halide or another descendant of one Aralkyl alcohol, e.g. B. a Benzene or toluenesulfonic acid ester of an arallcyl alcohol, and the reaction product hydrogenated in the pyridine ring.

Die Hydrierung kann z. B. katalytisch in Gegenwart von Platin- oder Palladiumkatalysatoren durchgeführt werden.The hydrogenation can be carried out e.g. B. catalytically in the presence of platinum or Palladium catalysts are carried out.

Ebenso wie nach dem Verfahren des Hauptpatents kann man auch nach dem vorliegenden Verfahren von Ausgangsstoffen, d. h. Dihydroisochinolinv erbindungen und Abkömmlingen von Aralkylalkoholen, ausgehen, die in den Kernen oder an der aliphatischen Kette z. B. durch Alkyl-, Alkylen-, Aryl-, Aralkyl-, Aralkylen-, Alkoxy-, Alkylendioxy-oder Hydroxylgruppen oder verschiedene solcher Gruppen substituiert sind. Durch diese Substitution können die Eigenschaften der Grundverbindungen in mannigfaltiger Weise abgewandelt werden. So können z. B. durch Substitution mit Alkoxy- oder Alkylendioxyresten, vorzugsweise bei Einführung mehrerer solcher Reste, analgetische Wirkungen erzielt werden.As with the procedure of the main patent, one can also use the present process of starting materials, d. H. Dihydroisoquinoline compounds and derivatives of aralkyl alcohols, starting in the nuclei or on the aliphatic Chain z. B. by alkyl, alkylene, aryl, aralkyl, aralkylene, alkoxy, alkylenedioxy or Hydroxyl groups or various such groups are substituted. Through this Substitution can change the properties of the basic compounds in a variety of ways be modified. So z. B. by substitution with alkoxy or alkylenedioxy radicals, preferably when several such residues are introduced, analgesic effects are achieved will.

Beispiele 1. 4,1 g i-Methyl-6, 7-dimethoxy-3, 4-dihydroisochinolin werden in io ccm absolutem Äther mit 8,o g y-Pheliylpropyljodid 3 Stunden am Rückflut gekocht. Man dampft dann den Äther ab, erwärmt den Rückstand noch kurze Zeit auf ioo°, entfernt dann durch Verreiben mit absolutem Äther das überschüssige y-Phenylpropyljodid, reibt das in Äther Unlösliche mit Aceton an, saugt ab und kristallisiert das erhaltene i-Methyl-2- (y-phenylpropyl) -6, 7-dimethoxy-3, 4-dihydroisochinoliniumjodid aus Aceton unter Zusatz von etwas Äther um. Die Verbindung schmilzt bei 124° trüb; die Schmelze klärt sich bei 134°.Examples 1. 4.1 g of i-methyl-6, 7-dimethoxy-3, 4-dihydroisoquinoline are refluxed in 10 cc of absolute ether with 8.0 g of y-pheliylpropyl iodide for 3 hours cooked. The ether is then evaporated off and the residue is warmed up for a short time 100 °, then removes the excess y-phenylpropyl iodide by rubbing with absolute ether, rubs what is insoluble in ether with acetone, sucks off and crystallizes what is obtained i-methyl-2- (y-phenylpropyl) -6, 7-dimethoxy-3, 4-dihydroisoquinolinium iodide Acetone with the addition of a little ether. The compound melts cloudy at 124 °; the Melt clears at 134 °.

Zur Reduktion wird i g des jodids in 2o ccm 5o%iger Essigsäure mit 3 g Zinkstaub 21/2 Stunden am Rückfluß gekocht, wonach die zuerst gelbe Lösung völlig entfärbt ist. Man saugt heiß vom unverbrauchten Zinkstaub ab, wäscht mit heißem `'Wasser nach, macht das Filtrat alkalisch und nimmt die abgeschiedene Base in Äther auf. Aus der getrockneten ätherischen Lösung wird mit ätherischer Salzsäure das Chlorhydrat des i-Methyl-2-(y-phenylpropyl)-6, 7-dimethoxy-i, 2, 3, 4-tetrahydroisochinolins gefällt, das nach dem Umkristallisieren aus absolutem Alkohol unter Zusatz von Äther bei 178 bis i8o° schmilzt. Analyse: C ., 1 H@, O . 1 # H Cl (36i,7) ber. C69,51'1, H 7,8o % gef. C 69,6i % H7,660/, 1,2 g des nach Beispiel i dargestellten i-Methyl-2-(y-phenylpropyl)-6, 7-dimethoxy-3, 4-dihydroisochinoliniumjodids werden in Methanol unter Zusatz von Wasser gelöst und durch Schütteln dieser Lösung mit frisch gefälltem Silberchlorid in das Chlorid übergeführt. Man saugt vom abgeschiedenen Silberjodid ab und schüttelt das Filtrat nach Zusatz von o,2 g Platinmohr unter Wasserstoff, wobei in kurzer Zeit die für i Mol berechnete Menge Wasserstoff aufgenommen wird. Durch Abfiltrieren vom Katalysator und Eindampfen der wäßrig-methanolischen Lösung, zweckmäßig im Vakuum, erhält man das Chlorhydrat des i-Methyl-2-(y-phenylpropyl) -6, 7-dimethoxy-i, 2, 3, 4-tetrahydroisochinolins, das nach dem Umkristallisieren aus absolutem Alkohol unter Zusatz von Äther bei 178 bis i8o° schmilzt und mit dem nach Beispiel i gewonnenen Präparat keine Schmelzpunktdepression gibt. To reduce the iodide, it is refluxed for 21/2 hours in 20 cc of 50% acetic acid with 3 g of zinc dust, after which the first yellow solution is completely decolorized. Unused zinc dust is sucked off hot, washed with hot water, the filtrate is made alkaline and the separated base is taken up in ether. From the dried ethereal solution, the hydrochloric acid is used to precipitate the hydrate of i-methyl-2- (y-phenylpropyl) -6, 7-dimethoxy-i, 2, 3, 4-tetrahydroisoquinoline, which after recrystallization from absolute alcohol is added of ether melts at 178 to 180 °. Analysis: C., 1 H @, O. 1 # H Cl (36i, 7) calcd. C69.51'1, H 7.8o% found C 69.6i% H7.660 /, 1.2 g of the i-methyl-2- (y-phenylpropyl) -6, 7-dimethoxy-3, 4-dihydroisoquinolinium iodide shown in Example i are dissolved in methanol with the addition of water and by shaking this solution with freshly precipitated silver chloride in the chloride transferred. The deposited silver iodide is filtered off with suction and, after the addition of 0.2 g of platinum black, the filtrate is shaken under hydrogen, the amount of hydrogen calculated for 1 mole being absorbed within a short time. By filtering off the catalyst and evaporating the aqueous-methanolic solution, expediently in vacuo, the hydrochloride of i-methyl-2- (y-phenylpropyl) -6, 7-dimethoxy-i, 2, 3, 4-tetrahydroisoquinoline is obtained after recrystallization from absolute alcohol with the addition of ether it melts at 178 to 180 ° and with the preparation obtained according to example i there is no depression of the melting point.

Claims (1)

PATENTANSPRUCH: Verfahren zur Herstellung von am Stickstoff durch einen Aralkylrest substituierten Tetrahydroisochinolinverbindungen der allgemeinen Formel in der 7a größer als z ist, durch Umsetzung einer im Pyridinring nicht vollständig hydrierten Isochinolinverbindung mit einem Abkömmling eines Aralkylalkohols und Hydrierung des Umsetzungsproduktes im Pyridinkern zu der entsprechenden Tetrahydroisochinolinverbindung nach Patent 707 705, dadurch gekennzeichnet, daß man von Dihydroisochinohnverbindungen ausgeht.PATENT CLAIM: Process for the preparation of tetrahydroisoquinoline compounds of the general formula which are substituted on the nitrogen by an aralkyl radical in which 7a is greater than z, by reacting an isoquinoline compound which is not completely hydrogenated in the pyridine ring with a derivative of an aralkyl alcohol and hydrogenating the reaction product in the pyridine nucleus to give the corresponding tetrahydroisoquinoline compound according to Patent 707,705, characterized in that dihydroisoquinoline compounds are used as the starting point.
DET54493D 1940-08-12 1940-11-08 Process for the preparation of tetrahydroisoquinoline compounds Expired DE725536C (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CH725536X 1940-08-12

Publications (1)

Publication Number Publication Date
DE725536C true DE725536C (en) 1942-10-05

Family

ID=4531888

Family Applications (1)

Application Number Title Priority Date Filing Date
DET54493D Expired DE725536C (en) 1940-08-12 1940-11-08 Process for the preparation of tetrahydroisoquinoline compounds

Country Status (1)

Country Link
DE (1) DE725536C (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609154A (en) * 1967-11-30 1971-09-28 Hoffmann La Roche 2-(arylpropyl)-1,2,3,4-tetrahydroisoquinolines, intermediates and processes
US4766131A (en) * 1980-10-17 1988-08-23 Pennwalt Corporation 2-amino (or hydroxy) phenethyl-1,2,3,4-tetrahydroisoquinolines as analgesics

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3609154A (en) * 1967-11-30 1971-09-28 Hoffmann La Roche 2-(arylpropyl)-1,2,3,4-tetrahydroisoquinolines, intermediates and processes
US4766131A (en) * 1980-10-17 1988-08-23 Pennwalt Corporation 2-amino (or hydroxy) phenethyl-1,2,3,4-tetrahydroisoquinolines as analgesics

Similar Documents

Publication Publication Date Title
DE2265255C2 (en) 2-Aminoäthylhexahydrophenanthrene derivatives and their acid addition salts
DE725536C (en) Process for the preparation of tetrahydroisoquinoline compounds
DE2413102C3 (en) Process for the production of l- (3,5-dihydroxyphenyl) -t-hydroxy-2-square brackets on 1-methyl-2- (4-hydroxyphenyl) -ethyl] -aminoethane
DE726008C (en) Process for the preparation of papaverine-like tetrahydroisoquinoline compounds
DE725535C (en) Process for the preparation of tetrahydroisoquinoline compounds
DE730119C (en) Process for the preparation of tetrahydroisoquinoline compounds
DE667356C (en) Process for the preparation of tetrahydro-p-oxazinoalkylaryl ketones
DE2357849A1 (en) PROPANOLAMINE DERIVATIVES AND MEDICINAL PREPARATIONS
AT350539B (en) Process for the preparation of new 4- (3-SUBST. AMINO-2-HYDROXPROPOXY) -5,6,7,8-TETRAHYDRO-1,6,7-NAPHTHALINTRIOLS
DE730667C (en) Process for the preparation of hydrogenated isoquinoline compounds which are aralkyl-substituted in the nitrogen-containing nucleus and which contain free hydroxyl groups in an aromatic nucleus
DE1470420C3 (en) Process for the preparation of 3 alkyl 12 3 4 6 7 hexahydro 9,10 dial koxy 2 alkoxycarbonylmethyl HbH benzo (a) quinohzine
DE728326C (en) Process for the preparation of hydrogenated isoquinoline compounds which are aralkyl-substituted in the nitrogen-containing nucleus and which contain free hydroxyl groups in an aromatic nucleus
DE1470065C3 (en) Process for the preparation of quinolizine derivatives
DE732502C (en) Process for the preparation of tetrahydroisoquinoline compounds
DE837693C (en) Process for the preparation of piperidohydrophenanthrene compounds
AT213877B (en) Process for the preparation of new base substituted diphenylalkane derivatives and their acid addition salts or quaternary ammonium salts
DE2552868A1 (en) 1,4-BENZODIOXANES, PROCESS FOR THEIR PREPARATION AND MEDICINAL PREPARATIONS CONTAINING THESE COMPOUNDS
AT331253B (en) PROCESS FOR THE PREPARATION OF 2,4-DIAMINO-5-FORMYLPYRIMIDINE
DE908024C (en) Process for the preparation of 1- (3 ', 4'-dioxyphenyl) -2-aralkylamino-butanols
AT160827B (en) Process for the preparation of mixed-substituted organic mercury compounds.
Chu et al. Study of Gelsemine. I. The Reduction of Gelsemine
AT236954B (en) Process for the preparation of quinolizine derivatives
DE963776C (en) Process for the preparation of anti-inflammatory ª ‡ -amino-ª ‰ -oxycarboxylic acid anilides
DE881041C (en) Process for the preparation of C-substituted 1-phenyl-3-N-cyclohexylaminopropanes
AT234692B (en) Process for the preparation of isoquinoline derivatives