Aromaticity-Based Theory of Pericyclic Reactions

Abstract

The resonance energies of conjugated compounds in the electronically excited state were calculated on the basis of the aromaticity theory previously reported by us. The allowednesses of pericyclic reactions were predicted by means of these resonance energies. The predictions based on the resonance energy difference (RED) between the pericyclic transition state and the reactant(s) are in general agreement with the experiment.