A new method using 2-chloro-4,6-dimethoxy-1,3,5-triazine for facile elimination of dimethylamino group in Eschenmoser’s methylenation for synthesis of α,β-unsaturated esters
作者:Kohei Yamada、Kazumasa Masaki、Yuri Hagimoto、Seina Kamiya、Munetaka Kunishima
DOI:10.1016/j.tetlet.2013.01.092
日期:2013.3
A facile one-step method for the elimination of the dimethylamino group in Eschenmoser’s methylenation has been developed using a combination of 2-chloro-4,6-dimethoxy-1,3,5-triazine and triethylamine. The chemoselective elimination of the dimethylamino group occurred in compounds possessing either a diethylamino group or an alkylsulfanyl group.
使用2-氯-4,6-二甲氧基-1,3,5-三嗪和三乙胺的组合,已经开发出一种简便的一步法消除Eschenmoser的亚甲基化中的二甲基氨基。在具有二乙氨基或烷基硫烷基的化合物中发生二甲基氨基的化学选择性消除。