Carbon-Carbon Bond Fission Reactions of Four-membered Ring Compounds Formed by Photoaddition of Heteroaromatics Containing an α, β-Unsaturated Carbonyl System to Alkenes

Abstract

This article describes a variety of C-C bond fission reactions of a cyclobutane ring formed by photoaddition of heteroaromatics containing an α, β-unsaturated carbonyl system in their ring systems to alkenes and other _π2 components. The reactions are assisted by the strain involved in the four-membered ring and provide unique methods either for introduction of a variety of carbon chains or for annelation to heteroaromatic compounds.