1?,?*-Induced Photocleavage of γ,δ-Epoxy-eucarvone

Article abstract of DOI:10.1002/hlca.19800630828

On ¹?,Π^*-excitation 1 undergoes cleavage of the C,C-oxirane bond (1 -> c) and isomerizes to the bicyclic dihydrofurane compound 5.In addition, 1 shows photocleavage of the C(γ),O-oxirane bond (1 -> d) and gives the isomers 2, 3, 6, 7 and 8.Furthermore, the cyclohexenone 9 and the cyclohexene-1,4-dione formed presumably via an intermediate 13, which could also arise from d.Besides these products the compounds 11 and 12 are obtained, which are photoproducts of 2.