CYCLOADDITON REACTIONS OF BENZOTHIETE AND HETERO DIENOPHILES FOR THE SYNTHESIS OF HETEROCYCLIC SYSTEMS

Article abstract of DOI:10.1016/S0040-4039(00)85305-8

Benzothiete (1) undergoes cycloaddition reactions with hetero dienophiles with NN-, NO- or CO- double bonds, leading to six-membered heterocyclic ring systems of 2H-3,4-dihydro-1,2,3-benzothiadiazine (3), 4H-3,1,2-benzoxathiazine (4) and 4H-3,1-benzoxathiin.