A Mild Synthesis of Vinyl Halides and<i>gem</i>-Dihalides Using Triphenyl Phosphite−Halogen-Based Reagents

Abstract

A new application of (PhO)3P-halogen-based reagents to the synthesis of vinyl halides and gem-dihalides is described. Vinyl halides were prepared in good to excellent yields from enolizable ketones, whereas aldehydes afforded the corresponding gem-dihalides. The halogenation proceeded smoothly under mild conditions.