Abstract
The family of poly-sulfur-nitrogen heterocycles includes highly stable aromatic compounds that display physicochemical properties with relevance in the design of new materials, especially those relating to molecular conductors and magnets. The interesting characteristics found in many of these heterocycles have led to the development of modern synthetic methods that are the subject of this review. Heterocycles such as 1,2,3- and 1,2,5-thiadiazoles, 1,2,3- and 1,3,2-dithiazoles, 1,2,3,5-dithiadiazoles, thiatriazines, trithiadiazines, dithia(and trithia)diazepines, trithiatriazepines, di-thia(and trithia)tetrazozines, and fused systems are most commonly synthesized from tetrasulfur tetranitride and organic substrates (alkynes, diazomethanes), and from sulfenyl chlorides, sulfur or disulfur dichlorides and nitrogen containing reagents such as bis(trimethylsilyl)sulfurdiimide, trimethylsilyl azide, trisilylated amidines, N-imidoylamidines, hydrazones, oximes, and amines.
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