Ev. Tarasov et al., C-NUCLEOPHILIC SUBSTITUTION OF 5-HALO-1,2,3-THIADIAZOLES AS AN APPROACH TO FUSED PYRIDONES AND PYRANONES, Journal of chemical research. Synopses, (11), 1997, pp. 396-397
A new approach to the one-pot preparation of fused 1,2,3-thiadiazoles
from 5-chloro-substituted derivatives, involving C-nucleophilic substi
tution followed by subsequent cyclization, has been found.