Oxidative α-Trichloromethylation of Tertiary Amines: An Entry to α-Amino Acid Esters
作者:Changming Xu、Zhaobin Zhu、Yongchang Wang、Zhiguo Jing、Bin Gao、Li Zhao、Wen-Kui Dong
DOI:10.1021/acs.joc.8b03238
日期:2019.2.15
α-Trichloromethylation of tertiary amines with trimethyl(trichloromethyl)silane by oxidative coupling, using DDQ as an oxidant, has been realized. The reaction is instantaneous, is scalable, and tolerates a broad range of functional groups and heteroarenes. The trichloromethylated products can be easily converted into β,β-dichloroamines, enamines, and α-amino acid esters under operationally simple conditions
以DDQ为氧化剂,通过氧化偶合实现了叔胺与三甲基(三氯甲基)硅烷的α-三氯甲基化反应。该反应是瞬时的,可扩展的,并且耐受广泛的官能团和杂芳烃。在操作简单的条件下,三氯甲基化的产物可以轻松地转化为β,β-二氯胺,烯胺和α-氨基酸酯。该方法为有毒的氰化反应提供了一种有效的替代方法,用于合成羧酸及其衍生物。