A Note on Intramolecular Photochemical Cycloaddition of<i>N</i>-substituted Dimethacrylimides
作者:Alex Alder、Niklaus Bühler、Daniel Bellus
DOI:10.1002/hlca.19820650805
日期:1982.12.15
The intramolecular photochemical [2+ 2]-cycloaddition of N-substituted dimethacrylimides 1a and 1c, respectively, proceeds under conditions of direct irradiation (λ = 254 nm) as well as triplet photosensitization highly regioselectively yielding predominantly the «cross» bonding (head-to-tail) cycloadducts 3a and 3c, respectively, with a 3-azabicyclo [3.1.1]heptane ring system.
N-取代的二甲基丙烯酰亚胺1a和1c的分子内光化学[2+ 2]-环加成反应是在直接辐射(λ= 254 nm)以及高度区域选择性的三重态光敏化条件下进行的,主要产生“交叉”键(头-尾)环加合物3a和3c分别具有3-氮杂双环[3.1.1]庚烷环系统。