The photochemistry of acyl azides — IX. Direct and sensitized photolytic generation of acylnitrenes for cycloaddition reactions
作者:Kai-Uwe Clauss、Karin Buck、Werner Abraham
DOI:10.1016/0040-4020(95)00366-g
日期:1995.6
types with respect to benzoylnitrene, which was generated by three different routes: direct photolysis of benzoyl azide, sensitization of azide decomposition via energy transfer, and photoinduced electron transfer. In all cases the same cycloadducts 23, 24, and 30 were obtained. Carbonyl activity determines the reactivity of unsaturated ketones and aldehydes with respect to benzoylnitrene.
与乙氧基羰基丁烯相反,选择性反应-包括缩载反应-可以用苯甲酰基基丁烯进行。这项研究分析了通过三种不同的途径产生的各种键类型与苯甲酰氮的反应性顺序:苯甲酰叠氮化物的直接光解,通过能量转移引起的叠氮化物分解的敏化以及光诱导的电子转移。在所有情况下相同的cycloadducts 23,24,和30获得的。羰基活性决定了不饱和酮和醛相对于苯甲酰基氮丁烯的反应性。