作者:Xue-Ying Wang、Si-Kai Zhu、Mei-Ling Cheng、Ru Jiang、Sheng-Yong Zhang、Ping-An Wang
DOI:10.1002/ejoc.202400184
日期:——
An organic-superbase-catalyzed glutamation of phenols, thiophenols, secondary amines and imides has been realized through Michael addition between α,β-unsaturated esters and benzophenone-imines of glycine esters. 3-Substituted glutamic acid esters were obtained in excellent yields and diastereoselectivities (up to quantitative yield and >20 : 1 dr) in THF by using LiBr as an additive at room temperature
通过α,β-不饱和酯与甘氨酸酯的二苯甲酮亚胺之间的迈克尔加成反应,实现了有机超强碱催化的苯酚、苯硫酚、仲胺和酰亚胺的谷氨酸化。在室温下使用 LiBr 作为添加剂,在 THF 中以优异的产率和非对映选择性(高达定量产率和 >20 : 1 dr)获得了 3-取代的谷氨酸酯。