When diazo compounds meet with organoboron compounds

Abstract

Transition-metal free reactions of diazo compounds with organoboron compounds provide some unique approaches for the formation of C-C, C-B and C-Si bonds. With N-tosylhydrazones as the precursors for non-stabilized diazo compound, this type of reaction becomes practically useful in organic synthesis. Transition-metal-free synthetic methodologies for borylation, gem-diborylation, gem-silylborylation arylation, 2,2,2-trifluoroethylation and gem-difluorovinylation have been successfully developed.