Solvent and Catalyst-Free Mechanochemical C(sp ³ )–S Cross-Coupling/Cyclization/Dehydration Cascade: Substrate-Controlled Divergent Synthesis of 2,3-Dihydrothiazoles and Thiazolidines

)-S cross-coupling/intramolecular cyclization/dehydration cascade affording higher yields compared to solution-based traditional methods, which typically require reaction times of several hours. This process features operationally simple mild condition, short reaction time, chemo-/regioselectivity, broad substrate scope, good functional group compatibility, excellent yields, facile scalability, and overcomes key synthetic challenges. Noteworthy, stereochemistry of the exocyclic double bond was assigned to have Z-configuration.