AT55403B - Process for the production of quinine esters of aromatic amino acids. - Google Patents

Process for the production of quinine esters of aromatic amino acids.

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Publication number
AT55403B
AT55403B AT55403DA AT55403B AT 55403 B AT55403 B AT 55403B AT 55403D A AT55403D A AT 55403DA AT 55403 B AT55403 B AT 55403B
Authority
AT
Austria
Prior art keywords
quinine
esters
amino acids
aromatic amino
production
Prior art date
Application number
Other languages
German (de)
Original Assignee
Ver Chininfabriken Zimmer & 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 Ver Chininfabriken Zimmer & Co filed Critical Ver Chininfabriken Zimmer & Co
Application granted granted Critical
Publication of AT55403B publication Critical patent/AT55403B/en

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  • Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)

Description

  

   <Desc/Clms Page number 1> 
 
 EMI1.1 
 
 EMI1.2 
 

 <Desc/Clms Page number 2> 

 
 EMI2.1 
 bildet ein gelbes, in Wasser leicht lösliches Pulver, das fast geschmacklos ist und an- ästhesierend wirkt. 



   B e i s p i e l III : Herstellung d e s 5 - A m i n o s a l i z y l c h i n i n s. 324 Teile Chinin   (1   Mol.) und 259 Teile 5-Nitrosalol werden im Vakuum 4 Stunden auf 140 bis 145  erhitzt, wobei Phenol abdestilliert. Den Rückstand erwärmt man mit Benzol, wodurch man gelbe, benzolhaltige Kristallblättchen erhält, welche nach Umkristallisieren aus Benzol bei   11. 20 schmnlzen. Beim   Kochen mit 12 Teilen 5prozentiger Schwefelsäure lösen sie sich auf, heim Erkalten    d Lösung kristallisiert   saures, schwefelsaures 5-Nitrosalizylchinin in gelben, geschmacklosen Blättchen aus. Sie sind sehr schwer löslich in kaltem Wasser und Alkohol, leicht löslich in heissem Alkohol. 



   Zur Darstellung des   5-Aminosalizylchinins,   werden 1 Teil saures, schwefelsaures   5-Nitrosalizylchinin, 5   Teile 10prozentige Salzsäure, 4   Teile- wässeriger Alkohol   und   H   Toile einer 60prozentigen Lösung von Zinnchlorür eine halbe   Stunde   auf dem Wasser-   had''erwärmt..   Nach dem Erkalten schüttelt man mit 80   Teilf'ü lOprozentiger Natron-   lauge und 15 Teilen Äther, trennt die alkalische Lösung von der   ätherischen   Lösung des 5-Aminosalizylchinins, wäscht letztere mit Wasser und schüttelt mit 1.2. Teilen 10pro- 
 EMI2.2 
 säuren herstellen.



   <Desc / Clms Page number 1>
 
 EMI1.1
 
 EMI1.2
 

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 EMI2.1
 forms a yellow powder that is easily soluble in water, is almost tasteless and has an anesthetic effect.



   Example III: Manufacture of the 5 - A m i n o s a l i z y l c h i n i n s. 324 parts of quinine (1 mol.) And 259 parts of 5-nitrosalol are heated to 140 to 145 in vacuo for 4 hours, phenol being distilled off. The residue is heated with benzene, giving yellow, benzene-containing crystal flakes which, after recrystallization from benzene, melt at 11.20. When boiled with 12 parts of 5% sulfuric acid, they dissolve, when the solution cools, acidic, sulfuric acid 5-nitrosalicylquinine crystallizes in yellow, tasteless leaves. They are very sparingly soluble in cold water and alcohol, easily soluble in hot alcohol.



   To prepare the 5-aminosalicylquinine, 1 part of acidic, sulfuric acid 5-nitrosalicylquinine, 5 parts of 10 percent hydrochloric acid, 4 parts of aqueous alcohol and a 60 percent solution of tin chloride are heated for half an hour on the water To cool, it is shaken with 80 parts of 10 percent sodium hydroxide solution and 15 parts of ether, the alkaline solution is separated from the ethereal solution of 5-aminosalicylquinine, the latter is washed with water and shaken at 1.2. Share 10pro-
 EMI2.2
 make acids.

 

Claims (1)

PATENT-ANSPRUCH : Verfahren zur Herstellung von Chininestern aromatischer Aminosäuren, darin bestehend, dass man zunächst nach einer der üblichen Methoden den Chininester der betreffenden Nitrosäure herstellt und den Nitroazidylchininester dann durch Reduktion in don gewünschten Aminoazidylester überführt. PATENT CLAIM: Process for the preparation of quinine esters of aromatic amino acids, which consists in first preparing the quinine ester of the nitro acid in question by one of the customary methods and then converting the nitroazidylquinine ester into the desired aminoacidyl ester by reduction.
AT55403D 1910-10-07 1911-08-23 Process for the production of quinine esters of aromatic amino acids. AT55403B (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE55403X 1910-10-07

Publications (1)

Publication Number Publication Date
AT55403B true AT55403B (en) 1912-09-25

Family

ID=5628382

Family Applications (1)

Application Number Title Priority Date Filing Date
AT55403D AT55403B (en) 1910-10-07 1911-08-23 Process for the production of quinine esters of aromatic amino acids.

Country Status (1)

Country Link
AT (1) AT55403B (en)

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