α,β-Unsaturated thioacylsilanes as efficient dienes in hetero Diels–Alder reactions

Reaction of several α,β-unsaturated thioacylsilanes with in situ generated thioaldehydes and thioacylsilanes affords under mild conditions a clean and regioselective access to 2-substituted 4-silyl-1,3-dithiacyclohex-4-ene derivatives, arising from an hetero-Diels–Alder reaction between two different thiocarbonyl compounds.