GB355808A - Improvements in the manufacture of ?-aminothiophenols - Google Patents
Improvements in the manufacture of ?-aminothiophenolsInfo
- Publication number
- GB355808A GB355808A GB1661030A GB1661030A GB355808A GB 355808 A GB355808 A GB 355808A GB 1661030 A GB1661030 A GB 1661030A GB 1661030 A GB1661030 A GB 1661030A GB 355808 A GB355808 A GB 355808A
- Authority
- GB
- United Kingdom
- Prior art keywords
- hydrolysed
- mercaptobenzthiazole
- mercapto
- treating
- elevated temperature
- 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
Links
Landscapes
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
Abstract
O-Aminothiophenols are prepared by treating 2-mercaptoarylenethiazoles with aqueous caustic soda of from 5 to 40 per cent strength at an elevated temperature in a closed vessel. The reaction proceeds smoothly without formation of by-products so that the o-aminoarythioglycollic acids may be formed directly by treating the reacting solution with chloracetic acid. In examples 2-mercaptobenzthiazole is hydrolysed to o-aminothiophenol and the latter isolated as o-aminothioglycollic acid, 6-ethoxy-2-mercaptobenzthiazole is hydrolysed to 2 - amino - 5 - ethoxythiophenol, and 2 - mercapto-b (N).a -naphthathiazole is hydrolysed to 2-mercapto-1-naphthylamine. The Specification adverts to the prior use of hot alcoholic potash, whilst the Provisional Specification describes the treatment of 2-mercaptoarylenethioazoles with aqueous caustic alkali of less than 80 per cent strength at an elevated temperature and in a closed vessel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1661030A GB355808A (en) | 1930-05-29 | 1930-05-29 | Improvements in the manufacture of ?-aminothiophenols |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| GB1661030A GB355808A (en) | 1930-05-29 | 1930-05-29 | Improvements in the manufacture of ?-aminothiophenols |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB355808A true GB355808A (en) | 1931-08-31 |
Family
ID=10080429
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB1661030A Expired GB355808A (en) | 1930-05-29 | 1930-05-29 | Improvements in the manufacture of ?-aminothiophenols |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB355808A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2454260A (en) * | 1946-02-12 | 1948-11-16 | Hoffmann La Roche | Preparation of metal mercaptides of amino-aryl mercaptans |
| US2791612A (en) * | 1955-10-10 | 1957-05-07 | American Cyanamid Co | Isolation process for 2-aminothiophenol |
-
1930
- 1930-05-29 GB GB1661030A patent/GB355808A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US2454260A (en) * | 1946-02-12 | 1948-11-16 | Hoffmann La Roche | Preparation of metal mercaptides of amino-aryl mercaptans |
| US2791612A (en) * | 1955-10-10 | 1957-05-07 | American Cyanamid Co | Isolation process for 2-aminothiophenol |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| GB355808A (en) | Improvements in the manufacture of ?-aminothiophenols | |
| GB392845A (en) | Improvements in or relating to the production of hydrazine | |
| GB389511A (en) | Process of producing o-aminoaryl mercaptans and derivatives thereof | |
| GB328697A (en) | Improvements in or relating to processes for the purification of graphites | |
| GB599073A (en) | Improvements in sulphur recovery | |
| GB435721A (en) | Improvements in process for preparing metol | |
| GB242669A (en) | Process for the manufacture of organic mercury compounds | |
| US1923248A (en) | Process for making 6-bromo-2-hydroxy-naphthalene-3-carboxylic acid | |
| GB348134A (en) | Improvements in the manufacture and production of alkylene cyanhydrins | |
| GB441919A (en) | Improvements in the manufacture and production of nitrodibenzanthrones | |
| GB462337A (en) | Manufacture of 2:6-dimethylnapththalene-7-sulphonic acid | |
| GB234518A (en) | Improvements in the manufacture of titanic acid | |
| GB358032A (en) | Improvements in and relating to the production of esters of anthrahydroquinones | |
| GB409871A (en) | Production of alkali metal carbamates | |
| GB206734A (en) | New intermediate compounds | |
| GB368505A (en) | Improvements in the manufacture of thioindigoid vat-dyestuffs | |
| GB427847A (en) | A process for the preparation of dibenzothiazyldisulphide | |
| GB358056A (en) | Process for the manufacture of carbazole-2:7-disulphonic acid | |
| GB425841A (en) | Improvements in or relating to the manufacture of thioindigo dyestuffs | |
| GB350862A (en) | Manufacture of a stable reduction compound of a vat-dyestuff | |
| GB470468A (en) | Improvements in the manufacture and production of ureas from alpha-omega-diaminocarboxylic acids | |
| GB486153A (en) | Improvements in the oxidation of chromium sulphate to chromic acid | |
| GB270283A (en) | Process for the production of chlorthymol (1-methyl-3-oxy-4-isopropyl-6-chlor-benzene) | |
| GB457518A (en) | Process for the manufacture of 2.4-dinitro-3:6-dihalogenanilines | |
| GB179031A (en) | A process for the manufacture of o-alkyl derivatives of hydrocupreine |