Allenyl(vinyl)methane photochemistry. Photochemistry of γ-(3-methyl-1-phenyl-1,2-butadienyl)-substituted α,β-unsaturated ester and nitrile derivatives
作者:Takashi Tsuno、Hidetaka Hoshino、Rieko Okuda、Kunio Sugiyama
DOI:10.1016/s0040-4020(01)00426-4
日期:2001.6
The direct photolyses of the γ-(3-methyl-1-phenyl-1,2-butadienyl)-substituted α,β-unsaturated esters and nitriles gave the bicyclo[2.1.0]pentanes, cross-conjugated trienes, and several intramolecular products, while the triplet-sensitization led to the former two compounds. It was found that the photochemoselectivity depended on the substituents on the vinyl group and would be controlled by the energy
γ-(3-甲基-1-苯基-1,2-丁二烯基)取代的α,β-不饱和酯和腈的直接光解产生了双环[2.1.0]戊烷,交叉共轭三烯和几种分子内分子产品,而三重态敏化导致前两种化合物。已经发现,光化学选择性取决于乙烯基上的取代基,并且可以通过使用三重态敏化剂的能量来控制。