Enantiomer separation of 2‐halomandelic acids via diastereomeric salt formation with chiral <i>N</i>‐substituted 2‐amino‐2‐phenylethanols
作者:Koichi Kodama、Yumi Kondo、Kosei Katayama、Moeka Yanagisawa、Takuji Hirose
DOI:10.1002/chir.23630
日期:2024.2
Chiral N-substituted secondary 1,2-aminoalcohols have been developed for the enantioseparation of ortho-halomandelic acids (o-X-MAs) via diastereomeric salt formation. Two structural isomers, N-methyl-2-amino-1,2-diphenylethanol and N-benzyl-2-amino-2-phenylethanol, showed high separation abilities for o-X-MAs (X = Cl, Br, I). The chiral recognition mechanism was elucidated by crystallographic analysis
手性N取代仲 1,2-氨基醇已开发用于通过非对映体盐形成原卤扁桃酸 ( o -X-MA) 的对映体分离。两种结构异构体N-甲基-2-氨基-1,2-二苯基乙醇和N-苄基-2-氨基-2-苯基乙醇对o -X-MA(X = Cl、Br、I)表现出较高的分离能力。通过难溶盐的晶体学分析阐明了手性识别机制。拆分剂氮原子上的取代基和结晶溶剂的包含稳定了盐并增强了它们的分离能力。