The photo-addition of 3-phenylcyclohex-2-enone and tetramethylethylene. Evidence for singlet and triplet pathways leading to a common intermediate
Abstract
The photo-addition of 3-phenylcyclohex-2-enone and tetramethylethylene occurs from S1 on direct irradiation, and from T1 on sensitization, to afford the same cyclobutane adduct.