Preparation of 2-chlorobenzthiazole

Details Preparation of 2-chlorobenzthiazole Preparation of 2-chlorobenzthiazole

1983-08-26

1988-08-16

Gerstl, Robert

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

Organic compounds

Heterocyclic carbon compounds containing a hetero ring...

C07D27762

Patent

active

047646217

ABSTRACT:
A process for the preparation of 2-chlorobenzthiazole comprising reacting benzthiazole with elementary chlorine in an inert, boiling solvent in the presence of a catalyst. Advantageously the solvent is phosphorus oxychloride or chlorobenzene, the catalyst is iron-III chloride or aluminum chloride and phosphorus trichloride or pyridine is also present as a co-catalyst. The desired product is obtained in high yield.

REFERENCES:
Eisch, Adv. Heterocycl. Chem. 7, 1-37, (1966).
Ullmanns Encyklopadie der Technischen Chemie, Prof. Dr. Ing S. Balke et al., 1966, pp. 330-331.

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