Nucleophilic Addition of Sulfoxonium Ylides to Hypervalent Iodine Diazo Compounds as N-terminal Electrophiles: Direct Access to novel Functionalized Hydrazones

A catalyst and additive-free nucleophilic addition of sulfoxonium ylides to Hypervalent Iodine Diazo Reagents as N-terminal electrophiles has been develoved. The reaction not only leads to the facile access to the highly functionalized hydrazones but also significantly advances the understanding of hitherto unexplored terminal N-electrophilicity in HIDCs. The operational simplicity, wide substrate scope, high product yields and mild conditions are notable features of the methodology.