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.Info
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Description
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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-
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säuren herstellen.
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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-
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make acids.
Claims (1)
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) |
-
1911
- 1911-08-23 AT AT55403D patent/AT55403B/en active
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