REACTIONS OF METHYLATED 5-CHLORO-1,2,3-THIADIAZOLIUM SALTS WITH CYCLOHEXANE-1,3-DIONES - X-RAY CRYSTAL-STRUCTURE ANALYSIS OF THE THIAPENTALENIC PRODUCTS
G. Labbe et al., REACTIONS OF METHYLATED 5-CHLORO-1,2,3-THIADIAZOLIUM SALTS WITH CYCLOHEXANE-1,3-DIONES - X-RAY CRYSTAL-STRUCTURE ANALYSIS OF THE THIAPENTALENIC PRODUCTS, Journal of the Chemical Society. Perkin transactions. I, (24), 1993, pp. 3051-3053
The N-3 methylated thiadiazolium salt 3 reacts with cyclohexane-1,3-di
one and 5,5-dimethylcyclohexane-1,3-dione to give mesoionic 1,2,3-thia
diazoles (5 and 6) with short intramolecular S...O contacts, whereas t
he N-2 methylated thiadiazolium salt 4 furnishes oxathiole derivatives
(7 and 8) with short intramolecular S...N contacts.