GB700339A - Improvements in manufacture of mercapto aryl thiazoles - Google Patents

Improvements in manufacture of mercapto aryl thiazoles

Info

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
Application number
GB30302/51A
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Uniroyal Inc
Original Assignee
United States Rubber Co
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by United States Rubber Co filed Critical United States Rubber Co
Publication of GB700339A publication Critical patent/GB700339A/en
Expired legal-status Critical Current

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.
GB30302/51A 1951-03-29 1951-12-28 Improvements in manufacture of mercapto aryl thiazoles Expired GB700339A (en)

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)

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