GB387738A - Process of manufacturing 2-mercaptoarylthiazoles - Google Patents
Process of manufacturing 2-mercaptoarylthiazolesInfo
- Publication number
- GB387738A GB387738A GB24884/31A GB2488431A GB387738A GB 387738 A GB387738 A GB 387738A GB 24884/31 A GB24884/31 A GB 24884/31A GB 2488431 A GB2488431 A GB 2488431A GB 387738 A GB387738 A GB 387738A
- Authority
- GB
- United Kingdom
- Prior art keywords
- excess
- sulphur
- aniline
- thiazole
- product
- 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
- Preventing Corrosion Or Incrustation Of Metals (AREA)
Abstract
A 2-mercaptoarylthiazole compound is prepared by reacting substantially two mols. of a primary arylamine with substantially three atoms of sulphur and then heating at a temperature less than 200 DEG C. under pressures of 100-500 pounds/sq. ins., the product with carbon disulphide in excess of theoretical requirements, and separating the thiazole formed. In the examples aniline and sulphur in the specified proportion are reacted together at 180 DEG C. and the product, after removing excess aniline, is heated in an autoclave at 150-160 DEG C. and 400 pounds/sq.-ins. pressure with excess carbon disulphide; the 2-mercaptobenzthiazole is extracted by solution in caustic soda followed by acidification with sulphuric acid. It is stated that aniline disulphide is formed in the first reaction and that the subsequent formation of side-products is diminished and of thiazole is increased by working as specified. The production of 2-mercaptotolyland xylyl-thiazoles in a similar manner is also mentioned. The Specification as open to inspection under Sect. 91 relates to the production of a 2-mercaptoarylthiazole by reacting a primary arylamine with sulphur, and then heating the reaction product, preferably under pressure, with carbon disulphide in excess of theoretical requirements, and separating the thiazole compound formed. This subject-matter does not appear in the Specification as accepted.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US387738XA | 1930-09-22 | 1930-09-22 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB387738A true GB387738A (en) | 1933-02-16 |
Family
ID=21901817
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB24884/31A Expired GB387738A (en) | 1930-09-22 | 1931-09-04 | Process of manufacturing 2-mercaptoarylthiazoles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB387738A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4028473A1 (en) * | 1990-09-07 | 1992-03-12 | Akzo Gmbh | METHOD FOR PRODUCING 2-MERCAPTO-BENZOTHIAZOL |
| US5367082A (en) * | 1990-09-07 | 1994-11-22 | Akzo N.V. | Process for the preparation of 2-mercaptobenzothiazole |
-
1931
- 1931-09-04 GB GB24884/31A patent/GB387738A/en not_active Expired
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4028473A1 (en) * | 1990-09-07 | 1992-03-12 | Akzo Gmbh | METHOD FOR PRODUCING 2-MERCAPTO-BENZOTHIAZOL |
| US5367082A (en) * | 1990-09-07 | 1994-11-22 | Akzo N.V. | Process for the preparation of 2-mercaptobenzothiazole |
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