Process for the purification of crude 2-mercaptobenzothiazole

Details Process for the purification of crude 2-mercaptobenzothiazole Process for the purification of crude 2-mercaptobenzothiazole

1992-06-01

1993-03-30

Lee, Mary C.

Organic compounds -- part of the class 532-570 series

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27772

Patent

active

051985500

ABSTRACT:
Crude 2-mercaptobenzothiazole is purified by a process in which the crude 2-mercaptobenzothiazole is dissolved in relatively high-boiling aliphatic or cycloaliphatic alcohols or in mixtures of the alcohols mentioned or azeotropes thereof with water at temperatures of 60.degree. to 200.degree. C., optionally under elevated pressure, or is suspended in relatively high-boiling aliphatic or cycloaliphatic alcohols, aliphatic or cycloaliphatic ethers, organic acids or esters thereof at temperatures of 10.degree. to 100.degree. C., the solution or suspension is subsequently cooled and the product precipitating is filtered off and optionally washed.

REFERENCES:
patent: 3770759 (1973-11-01), Scherhag et al.
patent: 4316031 (1982-02-01), Bergfeld et al.

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