Syntheses of, and structural studies on, benzo-fused 1,2,4-thiadiazines

Abstract

The syntheses of nine benzo-fused-1,2,4-thiadizines are reported. The use of microwave synthesis has been shown to afford high yields and short reaction times in several key reaction steps. The molecular geometries of these heterocycles are discussed and their solid state packing motifs reveal a strong tendency for the N–H group to form hydrogen bonded chains.