Photoinduced electron-transfer reaction of 7-benzhydrylidenenorbornene: chemical capture of a radical cation intermediate with nonclassical cation character

Abstract

A photoinduced electron-transfer reaction of benzhydrylidenenorbornene 1 as an electron donor gives the radical cation 1⁺˙, which could be captured chemically by methanol or by the intramolecular hydroxy group, indicating the existence of a strong homoconjugative interaction between the exocyclic double bond and the C(2)–C(3) double bond.