GB700339A - Improvements in manufacture of mercapto aryl thiazoles - Google Patents
Improvements in manufacture of mercapto aryl thiazolesInfo
- Publication number
- GB700339A GB700339A GB30302/51A GB3030251A GB700339A GB 700339 A GB700339 A GB 700339A GB 30302/51 A GB30302/51 A GB 30302/51A GB 3030251 A GB3030251 A GB 3030251A GB 700339 A GB700339 A GB 700339A
- Authority
- GB
- United Kingdom
- Prior art keywords
- mercaptoarylthiazole
- alkali metal
- metal salt
- aqueous solution
- sulphur
- 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
Classifications
-
- C—CHEMISTRY; METALLURGY
- C07—ORGANIC CHEMISTRY
- C07D—HETEROCYCLIC COMPOUNDS
- C07D277/00—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings
- C07D277/60—Heterocyclic compounds containing 1,3-thiazole or hydrogenated 1,3-thiazole rings condensed with carbocyclic rings or ring systems
- C07D277/62—Benzothiazoles
- C07D277/68—Benzothiazoles with hetero atoms or with carbon atoms having three bonds to hetero atoms with at the most one bond to halogen, e.g. ester or nitrile radicals, directly attached in position 2
- C07D277/70—Sulfur atoms
- C07D277/72—2-Mercaptobenzothiazole
Landscapes
- Chemical & Material Sciences (AREA)
- Organic Chemistry (AREA)
- Organic Low-Molecular-Weight Compounds And Preparation Thereof (AREA)
- Thiazole And Isothizaole Compounds (AREA)
Abstract
Mercaptoarylthiazoles, which are contaminated with substantially the same impurities as when they are prepared from the interaction of a primary arylamine, sulphur and carbon disulphide, and the preparation of which involves the conversion of the mercaptoarylthiazole into an alkali metal salt in aqueous solution, are purified by aerating the impure aqueous solution of the alkali metal salt of the mercaptoarylthiazole. The aqueous solution of the alkali metal salt is subsequently acidified to precipitate the mercaptoarylthiazole in purified condition. The aeration may be carried out at temperatures from 20 DEG C. upwards. In the example aniline, carbon bisulphide and sulphur are heated and then treated with sodium hydroxide solvent to give a solution of sodium benzothiazyl mercaptide which is aerated for 2 hours and then precipitated with sulphuric acid to give pure mercaptobenzothiazole. U.S.A. Specifications 1,712,968, 1,858,344, 1,865,477, 1,891,198, and 1,972,963 are referred to.
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US700339XA | 1951-03-29 | 1951-03-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
GB700339A true GB700339A (en) | 1953-11-25 |
Family
ID=22092712
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
GB30302/51A Expired GB700339A (en) | 1951-03-29 | 1951-12-28 | Improvements in manufacture of mercapto aryl thiazoles |
Country Status (1)
Country | Link |
---|---|
GB (1) | GB700339A (en) |
-
1951
- 1951-12-28 GB GB30302/51A patent/GB700339A/en not_active Expired
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