Quinoxalino-fused sultines and their application in Diels-Alder reactions

Abstract

The synthesis of 7,8-disubstituted quinoxalino[2,3-d]-[1,2 lambda(4)]oxathiine 2-oxides 7a-c, precursors for quinoxalino-o-quinodimethanes 3a-c, and their application in the Diels-Alder reactions are reported.