Reaction of isatin with thiocarbohydrazide: a correction.

Heterocycles containing the indole ring system include some novel pharmacologically active compounds. Isatin and its N-acetylisatin are extremely versatile intermediates in the construction of a variety of heterocyclic systems when reacted with thiosemicarbazide derivatives. Literature survey revealed various interesting reactions of thiocarbohydrazide with cyclic ketones, cyclic 1,2-diketones and isatin.