Preparation of 2-aminobenzothiazoles

Details Preparation of 2-aminobenzothiazoles Preparation of 2-aminobenzothiazoles

1981-03-23

1982-12-14

Springer, David B.

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

548161, C07D27782

Patent

active

043639135

ABSTRACT:
Disclosed is a process for the preparation of 2-aminobenzothiazoles by the oxidative ring closure of an arylthiourea which comprises contacting the arylthiourea with sulfuric acid and a catalytic amount of a bromine compound.

REFERENCES:
patent: 3981883 (1976-09-01), Niess
patent: 4113732 (1978-09-01), Opgenorth et al.

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