A method for the synthesis of heterocyclic ring conjugates containing
1,2,3-thiadiazole and 1,2,3-triazole nuclei was elaborated. The mechan
ism of rearrangement (effect of substituents and solvents) was investi
gated by NMR spectroscopy. A novel domino-type rearrangement involving
both heterocycles was discovered. (C) 1998 Elsevier Science Ltd. All
rights reserved.