SYNTHESIS OF 2-ARYL AND 2-HETEROCYCLYL-2H-BENZO[E]-1,2,3,4-THIATRIAZIN-1,1-DIOXIDES

Several 2-(substituted) aryl-2H-benzo[e]-1,2,3,4-thiatriazin-1,1-dioxides (III) have been prepared in good yields, by the nitrosation of N-aryl-2-aminobenzenesulphonamides(II): derived from the reduction of corresponding N-aryl-2-nitrobenzenesulphonamides(I). 2-cyclohexyl, 2-benzyl and some heterocyclyl derivatives have also been prepared, the latter however, in lower yields. The mass spectra of these compounds show fragmentation patterns closely related to those observed in photolysis or thermolysis studies of such compounds. The infra-red spectra of these compounds have also been discussed.

N H RAMA ,A SAEED ,