Ma. Abdallah et al., REACTION OF 5-AROYLAMINO-1,3,4-THIADIAZOLE-2(3H)-THIONES WITH HYDRAZONOYL CHLORIDES, Journal of chemical research. Synopses, (9), 1995, pp. 370-371
The reaction of 5-aroylamino-1,3,4-thiadiazote-2(3H)-thiones 2 with hy
drazonoyl halides 3 in ethanol in the presence of triethylamine at roo
m temperature yields 3,5-disubstituted 1,3,4-thiadiazol-2(3H)-one 4-ar
oylthiosemicarbazones 8, via ring-chain tautomerism of the intermediat
e spirocycloadducts 7.