Regio-selectivity and relative reactivity of ylide formation in the reaction of ketocarbenoid with hetero-cumulenes

Abstract

The regiochemistry of the reaction of ketocarbenoid with phenyl isocyanate, phenyl isothiocyanate, and phenyl isoselenocyanate was studied and relative reactivity of these heteromultiple compounds was determined by competitive reactions. The order of the reactivity and the regio-selectivity in the reactions are explained by molecular orbital calculation.