73. Photochemistry of 5,6-Epoxy-1,3-dienes in the Ionone Series. Influence of a Hydroxy Group in the 7-Position

Article abstract of DOI:10.1002/hlca.19850680316

The synthesis and photolyses of the epoxydiene (E)-5 are described.On triplet excitation (λ>280 nm, acetone), (E)-5 undergoes initial cleavage of the C(5)-O bond leading to the intermediate c.Presumably an H-shift (c->e) followed by the fragmentation of t