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The thiourea derivatives containing an o-haloaryl substituent attached
to the nitrogen of the thioamide gave the expected benzothiazole. In
the absence of halogen, the thiourea derivatives give rise to differen
t products in different solvents accountable by alpha-cleavage, gamma-
hydrogen abstraction and oxidative cyclization. (C) 1998 Elsevier Scie
nce S.A. All rights reserved.