The photochemical reaction of 1‐indolethiocarbanilides 1, di‐ and tri‐substituted thioureas 3–5 and 4,4‐di‐methyl‐2,6‐dioxothiocyclohexanecarboxanilides 9 affording the respective benzothiazoles are described.
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Paramasivam et al. (1991) studied this question.
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