Phototransformations of <i>C</i>-Benzoylaziridines. Dipolarophilic Trapping of Photogenerated Azomethine Ylides<sup>1</sup>
作者:D. Ramaiah、M. Muneer、K. R. Gopidas、P. K. Das、N. P. Rath、M. V. George
DOI:10.1021/jo952047m
日期:1996.1.1
steady-state photolysis and product analysis. The formation of various photoproducts could be substantiated by ring opening via C-C bond cleavage (leading to azomethine ylides), intramolecular hydrogen abstraction, and C-N bond cleavage. Isolation of stereospecific 3-pyrroline derivatives from the photoreaction of benzoylaziridines in the presence of DMAD confirms our previous results concerning the azomethine
通过稳态光解和产物分析,已经研究了一些2,3-二氮酰基氮丙啶和2-芳基-3-芳酰基氮丙啶的光转化。各种光产物的形成可以通过CC键裂解(导致甲亚胺基团)开环,分子内氢提取和CN键裂解来证实。在DMAD存在下从苯甲酰基氮丙啶的光反应中分离出立体有择的3-吡咯啉衍生物,证实了我们先前关于在激光脉冲光激发下产生的作为偶氮次甲基的主要瞬时中间体的结果。1,a和1b与DMAD反应衍生的光加合物之一1-环己基-2-苯甲酰基吡咯二甲基3,4-二羧酸酯(25)经过新颖且不寻常的光重排,得到2-(1-苯甲酰基环己基)吡咯二甲基3,