(R)-(+)-N-Methylbenzoguanidine ((R)-NMBG) catalyzed acylative kinetic resolution of racemic 3-hydroxy-3-aryl-propanoates
作者:Akira Yamada、Kenya Nakata
DOI:10.1016/j.tetlet.2016.09.014
日期:2016.10
cyclohexane carboxylic anhydride under mild reaction conditions. A tert-butyl ester moiety is necessary to achieve a high selectivity. The effects of the substituents on the aromatic rings of the substrates were systematically investigated, and diverse substrates participated in the reaction with good s-values (>20) irrespective of the type of substituents and their patterns, except for o-methoxy group
(R)-(+)- N-甲基苯并胍((R)-NMBG)充当有效的酰基转移催化剂,用于在温和的反应条件下使用环己烷羧酸酐进行消旋β-羟基酯的酰基动力学拆分。甲叔丁基酯部分是必要的,以实现高选择性。系统地研究了取代基对底物芳环的影响,除了取代基的类型和样式,除邻甲氧基外,各种底物均以良好的s值(> 20)参与了反应。