SELECTIVE α-CLEAVAGE IN PHOTOLYSIS OF 7-SUBSTITUTED-6,9-DIMETHYL-6,7,8,9-TETRAHYDRO-6α,9α-EPOXYBENZOCYCLOOCTENE-5,10-DIONE
作者:Atsuhiro Osuka、Hitomi Suzuki、Kazuhiro Maruyama
DOI:10.1246/cl.1982.653
日期:1982.5.5
Photolysis of the title compounds in benzene gave spirophthalides and E- and Z-alkylidene phthalides via preferential α-cleavage at the more crowded side. On the basis of quantum yields and triplet lifetimes, this preference is indicated to arise from the different efficiencies of the radical recombination of possible biradicals.