作者:Y. Kitaura、T. Matsuura
DOI:10.1016/s0040-4020(01)98025-1
日期:1971.1
Steric and substituent effects on the photochemical reaction of 2,4,6-trialkylphenyl ketones has been investigated. A striking steric effect was observed in the photoreaction of 2,4,6-trialkylbenzophenones. The more hindered the carbonyl group, the more readily photoenolization occurs resulting in intramolecular cyclization leading to benzocyclobutenol derivatives. With 2,4,6-trialkylacetophenones
研究了立体和取代基对2,4,6-三烷基苯基酮的光化学反应的影响。在2,4,6-三烷基二苯甲酮的光反应中观察到惊人的空间效应。羰基越受阻,越容易发生光致烯化,导致分子内环化,导致苯并环丁烯醇衍生物。具有2,4,6-三烷基苯乙酮。在环化和光烯化反应中未观察到这种空间效应。这些反应已根据引起这些反应的激发态性质进行了解释。