DE247180C - - Google Patents

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Publication number
DE247180C
DE247180C DENDAT247180D DE247180DA DE247180C DE 247180 C DE247180 C DE 247180C DE NDAT247180 D DENDAT247180 D DE NDAT247180D DE 247180D A DE247180D A DE 247180DA DE 247180 C DE247180 C DE 247180C
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DE
Germany
Prior art keywords
morphine
quaternary
codeine
ammonium bases
converted
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.)
Active
Application number
DENDAT247180D
Other languages
German (de)
Publication of DE247180C publication Critical patent/DE247180C/de
Active legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C07ORGANIC CHEMISTRY
    • C07DHETEROCYCLIC COMPOUNDS
    • C07D489/00Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula:
    • C07D489/02Heterocyclic compounds containing 4aH-8, 9 c- Iminoethano-phenanthro [4, 5-b, c, d] furan ring systems, e.g. derivatives of [4, 5-epoxy]-morphinan of the formula: with oxygen atoms attached in positions 3 and 6, e.g. morphine, morphinone

Claims (1)

KAISERLICHESIMPERIAL PATENTAMT.PATENT OFFICE. Es wurde gefunden, daß man Morphin in guter Ausbeute in Codein und seine Homologen in der Weise überführen kann, daß man es mit quaternären Ammoniumbasen 5 oder Mischungen von Stoffen, die quaternäre Ammoniumbasen zu bilden vermögen, behandelt. It has been found that morphine can be converted into codeine and its homologues in good yield can be converted in such a way that it can be converted with quaternary ammonium bases 5 or mixtures of substances, the quaternary Ability to form ammonium bases, treated. Von den bisher bekannten Alkylierun'gsmethoden des Morphins unterscheidet sich dieseThis differs from the previously known alkylation methods for morphine ίο Art der Alkylierung vorteilhaft dadurch, daß die Bildung der sonst als Nebenprodukte entstehenden quaternären Alkaloidsalze vermieden wird. Vor der Benutzung des Diazomethane hat diejenige der Ammoniumbasen den Vorteil, daß sich das Verfahren technisch besser durchführen läßt, und daß die Alkylierungsmittel weniger giftig sind.ίο Type of alkylation advantageous in that the formation of the quaternary alkaloid salts which otherwise arise as by-products are avoided will. Before using the diazomethane, the one has the ammonium bases the advantage that the process can be carried out technically better, and that the alkylating agents are less toxic. Die Reaktion verläuft in der Weise, daß die quaternäre Base in tertiäres Amin übergeht und der abgespaltene Alkohol in statu nascendi das Morphin in seine Äther überführt. The reaction proceeds in such a way that the quaternary base changes into tertiary amine and the split off alcohol in statu nascendi transfers the morphine into its ether. Gegenüber anderen bisher bekannten Alkylierungen mit quaternären Ammoniumbasen (Ber. 6, S. 585 [1873], 13, S. 248 [1880], 35, S. 584 [1902], 35, S. 2757 [1902]; Journal of the Chem. Soc. 53, S. 630 [1888]) liegt hier ein grundsätzlicher Unterschied insofern vor, als alle bisher bekannten Reaktionen intramolekular verlaufen, während die hier beschriebene Reaktion eine intermolekulare darstellt. Das Gelingen der Reaktion ließ sich demnach in keiner Weise voraussehen.Compared to other previously known alkylations with quaternary ammonium bases (Ber. 6, p. 585 [1873], 13, p. 248 [1880], 35, P. 584 [1902], 35, p. 2757 [1902]; Journal of the Chem. Soc. 53, p. 630 [1888]) is here a fundamental difference in that all previously known reactions are intramolecular run, while the reaction described here is an intermolecular one. The success of the reaction could therefore in no way be foreseen. Beispiel.Example. 171 Teile Phenyltrimethylammoniumchlorid werden in Methylalkohol gelöst und mit einer Lösung von 56 Teilen Ätzkali in Methylalkohol versetzt. Vom ausgeschiedenen Chlorkali wird filtriert und das Filtrat zusammen mit 303 Teilen Morphinbase im Druckkessel zehn Stunden auf 1400 erhitzt. Aus der Reaktionsmasse wird der Methylalkohol abdestilliert, das Dimethylanilin mit Wasserdampf abgetrieben und das gebildete Codein von etwas unverändertem' Morphin in bekannter Weise durch Natronlauge und Benzol getrennt. Mit Berücksichtigung des zurückgewonnenen Morphins ist die Ausbeute an Codein nahezu theoretisch. Quaternäre Salze des Morphins oder Cödeins waren in nachweisbaren Mengen nicht vorhanden.171 parts of phenyltrimethylammonium chloride are dissolved in methyl alcohol and a solution of 56 parts of caustic potash in methyl alcohol is added. From the precipitated Chlorkali is filtered and the filtrate along with 303 parts of morphine base in the pressure vessel heated to 140 ten hours 0th The methyl alcohol is distilled off from the reaction mass, the dimethylaniline is driven off with steam and the codeine formed is separated from the somewhat unchanged morphine in a known manner by means of sodium hydroxide solution and benzene. Taking into account the recovered morphine, the codeine yield is almost theoretical. Quaternary salts of morphine or codeine were not present in detectable amounts. In ähnlicher Weise lassen sich auch die Homologen des Codeins darstellen.The codeine homologues can also be represented in a similar manner. Paten τ-Anspruch :Sponsorship τ claim: Verfahren zur Alkylierung von Morphin, dadurch gekennzeichnet, daß man Morphin mit quaternären Ammoniumbasen oder mit Mischungen solcher Stoffe, die quaternäre Ammoniumbasen zu bilden vermögen, mit oder ohne Lösungsmittel behandelt.Process for the alkylation of morphine, characterized in that morphine with quaternary ammonium bases or with mixtures of such substances, the quaternary Ability to form ammonium bases, treated with or without a solvent.
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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764615A (en) * 1986-11-25 1988-08-16 Council Of Scientific & Industrial Research Process for the preparation of codeine from morphine
US6949645B1 (en) 2004-05-20 2005-09-27 Acura Pharmaceuticals, Inc. Process for the production of opiates
US6972332B1 (en) 2004-05-20 2005-12-06 Acura Pharmaceuticals, Inc. Process for the production of opiates

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4764615A (en) * 1986-11-25 1988-08-16 Council Of Scientific & Industrial Research Process for the preparation of codeine from morphine
US6949645B1 (en) 2004-05-20 2005-09-27 Acura Pharmaceuticals, Inc. Process for the production of opiates
US6972332B1 (en) 2004-05-20 2005-12-06 Acura Pharmaceuticals, Inc. Process for the production of opiates

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