Ishita Hatial, Joyee Das, A. Ghosh
Sep 1, 2015
Citations
0
Influential Citations
5
Citations
Journal
European Journal of Organic Chemistry
Abstract
A convenient synthesis of 4,5-disubstituted 2H-thiopyran 1,1-dioxides is reported through a base induced process starting from eneyne sulfones. Except for strongly electron-withdrawing groups, the reaction tolerated a wide variety of substituents in the two aryl rings. This finding represents a major departure from the behaviour of the corresponding ethers. The reaction most probably proceeds through a 6π-electrocyclization from an in-situ-generated 1,3,5-trienyl sulfinate.