The Regio- and Stereo-chemistries of the (2π+2π) Photocycloaddition of Electron-deficient Ethenes to Isoquinolin-1(2H)-one

Abstract

The (2π+2π) photocycloaddition of isoquinolin-1(2H)-one to electron-deficient ethenes is efficient, regiospecific and highly stereoselective: 254nm irradiation of the acrylonitrile adduct induces retroadditon and rearrangement to an N-vinylisoindolinone with equal efficiencies.