GB501476A - Method of preparing mercapto aryl thiazoles - Google Patents
Method of preparing mercapto aryl thiazolesInfo
- Publication number
- GB501476A GB501476A GB3525/38A GB352538A GB501476A GB 501476 A GB501476 A GB 501476A GB 3525/38 A GB3525/38 A GB 3525/38A GB 352538 A GB352538 A GB 352538A GB 501476 A GB501476 A GB 501476A
- Authority
- GB
- United Kingdom
- Prior art keywords
- formic acid
- sulphur
- aniline
- mercapto aryl
- reaction
- 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)
- Thiazole And Isothizaole Compounds (AREA)
Abstract
501,476. Mercapto aryl thiazoles. WINGFOOT CORPORATION. Feb. 4, 1938, No. 3525. Convention. date, May 5, 1937. [Class 2 (iii)] Mercapto aryl thiazoles are prepared by reacting sulphur, a primary aromatic amine having a free ortho position, and an acid of the X # formula H-C-X-H where X represents oxygen or sulphur. The reaction may be carried out in one step, or intermediates may be progressively formed which are then transformed into the mercapto aryl thiazole. Acids mentioned as suitable are formic acid, thio formic acid, thiol formic acid, and dithio formic acid. Primary amines mentioned, include aniline, the toluidines, xylidines, alpha and beta naphthylamines, anisidines, phenetidines, ortho chlor aniline, amino-biphenyl, and para phenylene diamine. In an example, aniline and sulphur are heated together to form diphenyl sulphide, which is converted into diformamide by' heating with formic acid. This is then treated at elevated temperature with formic acid and sulphur to give the required 2- mercaptobenzothiazole. The reaction may be performed in one step by heating the aniline, formic acid and sulphur together in one operation. The preferred reaction temperature is from 220 to 250‹ C.
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| US501476XA | 1937-05-05 | 1937-05-05 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| GB501476A true GB501476A (en) | 1939-02-28 |
Family
ID=21963608
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| GB3525/38A Expired GB501476A (en) | 1937-05-05 | 1938-02-04 | Method of preparing mercapto aryl thiazoles |
Country Status (1)
| Country | Link |
|---|---|
| GB (1) | GB501476A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014029320A1 (en) * | 2012-08-21 | 2014-02-27 | Dsm Ip Assets B.V. | Method for preparation of thiazole derivatives |
-
1938
- 1938-02-04 GB GB3525/38A patent/GB501476A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2014029320A1 (en) * | 2012-08-21 | 2014-02-27 | Dsm Ip Assets B.V. | Method for preparation of thiazole derivatives |
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