3-(2-furyl)-6-(4-methylphenyl)-7H-1,2,4-triazolo[3,4-b][1,3,4]thiadiazine and its 6-phenyl analogue

Abstract

In the title compounds, C15H12N4OS, (I), and C14H10N4OS, (II), the thiadiazine ring adopts a skew-boat conformation, while the triazole and furyl rings are essentially planar. The phenyl group is twisted by 33.5 (2) and 47.9 (1)degrees out of the triazole-ring plane in (I) and (II), respectively.