Photoinduced electron transfer reactions of cyclopropanone acetal with conjugated enones in the presence of a redox-type photosensitizer

Article abstract of DOI:10.1016/0040-4039(96)00155-4

Photoreactions of the cyclopropanone acetal 1 with conjugated enones 2 in the presence of phenanthrene or pyrene as a redox-type photosensitizer gave the corresponding cross-coupling product 3 or mixtures of 3 with 5 in good yields together with the β-carbonyl radical-dimer 4.