Novel formation of dienes with greater steric congestion resulting from the Diels–Alder reaction–desulfonylation sequence of 4-acyl-4H,6H-thieno[3,4-c]furan 5,5-dioxides
Novel formation of dienes with greater steric congestion resulting from the Diels–Alder reaction–desulfonylation sequence of 4-acyl-4H,6H-thieno[3,4-c]furan 5,5-dioxides