Copper-catalyzed intramolecular redox reaction: Asymmetric synthesis of chiral 2-(1H-pyrrol-1-yl)-mandelic acid esters
作者:Hong-Jin Du、Chao Lin、Xiaoan Wen、Qing-Long Xu
DOI:10.1016/j.tet.2018.11.024
日期:2018.12
An efficient approach to chiral α-hydroxy acid esters by Lewis acid-mediated asymmetric [1,5]-hydride shift and isomerization of 2-(3-pyrroline-1-yl)arylketone acid ester has been achieved in up to 96% yield and 94% ee. This protocol would be applied in the synthesis of chiral α-hydroxy acid derivatives with simplicity and high enantioselectivity.
通过路易斯酸介导的2-(3-吡咯啉-1-基)芳基酮酸酯的不对称[1,5]-氢化物移位和异构化的手性α-羟基酸酯的有效方法已获得高达96%的产率和94%ee。该方案可用于合成具有简单性和高对映选择性的手性α-羟基酸衍生物。