A photochemical approach to phenylalanines and related compounds by alkylation of glycine
作者:Haydn S Knowles、Keith Hunt、Andrew F Parsons
DOI:10.1016/s0040-4020(01)00783-9
日期:2001.9
Phenylalanines can be prepared on UV photolysis of protected glycines in the presence of di-tert-butyl peroxide, substituted toluenes and the photosensitiser benzophenone. These reactions, which lead to highly selective mono-alkylation at the α-position of glycines, involve coupling of captodative α-glycine radicals with benzyl radicals. This method can be used to selectively alkylate a variety of
苯丙氨酸可在过氧化二叔丁基,取代的甲苯和光敏剂二苯甲酮的存在下,通过紫外线对受保护的甘氨酸进行光解而制得。这些导致甘氨酸的α-位置高度选择性的单烷基化的反应涉及将captodativeα-甘氨酸自由基与苄基自由基偶联。该方法可用于在中性反应条件下,使用一系列取代的甲苯选择性地烷基化各种甘氨酸衍生物。