Dual Roles of Sulfonyl Hydrazides: A Three-Component Reaction To Construct Fully Substituted Pyrazoles Using TBAI/TBHP

A Direct Metal-Free Decarboxylative Sulfono Functionalization (DSF) of Cinnamic Acids to α,β-Unsaturated Phenyl Sulfones

A metal-free room temperature decarboxylative cross-coupling between cinnamic acids and arylsulfonyl hydrazides has been realized for the first time for the synthesis of (E)-vinyl sulfones. The scope and versatility of the reaction has been demonstrated by the regio- and stereoselective synthesis of 22 derivatives with diverse structural features.

A convenient access to β-iodo sulfone by the iodine-mediated iodosulfonylation of alkenes

A novel iodine-mediated intermolecular iodosulfonylation reaction of alkenes for dual C–S and C–I bond formation was achieved.

Tetrabutylammonium iodide-catalyzed oxidative coupling of enamides with sulfonylhydrazides: synthesis of β-keto-sulfones

A novel synthetic route toward pharmaceutically interesting β-keto-sulfone derivativesviaTBAI/TBHP-mediated oxidative coupling of readily prepared enamides with sulfonylhydrazides is described.

Generation of ArS-substituted flavone derivatives using aryl thiols as sulfenylating agents

The regioselective and metal-free sulfenylation of flavones was achieved under aerobic conditions with ammonium iodide as an inducer.

Direct and metal-free arylsulfonylation of alkynes with sulfonylhydrazides for the construction of 3-sulfonated coumarins

A novel and metal-free procedure has been developed for the construction of sulfonated coumarins via direct arylsulfonylation of alkynes with sulfonylhydrazides.

Iodine-catalysed sp3 C–H sulfonylation to form β-dicarbonyl sulfones with sodium sulfinates

I₂ catalysed sp³ C–H sulfonylation to synthesize β-dicarbonyl sulfones with sodium sulfinate as the sulfonyl source.