The Reaction of 3-Substituted 2-(N-Cyanoimino)thiazolidine Derivatives with Hydrazine: Novel Synthesis of Triazoles

The reaction of 3-substituted 2-(N-cyanoimino)thiazolidine (NCT) derivatives with hydrazine hydrate afforded two types of 1,2,4-triazoles via a selective C 2 -S or C 2 -N 3 bond fission, in which the selectivity was controlled by the N 3 -substituent