Dynamic kinetic resolution of an azlactone catalyzed by octahedral chiral-at-metal cobalt(iii) complexes under phase-transfer alcoholysis

被引：0
|
作者：
Emelyanov, Mikhail A. [1 ]
Rozhkov, Evgeniy, V [1 ,2 ]
Maleev, Victor I. [1 ]
Larionov, Vladimir A. [1 ]
机构：
[1] Russian Acad Sci, AN Nesmeyanov Inst Organoelement Cpds, Moscow 119334, Russia
[2] DI Mendeleev Univ Chem Technol Russia, Russian Acad Sci, Higher Chem Coll, Moscow 125047, Russia
来源：
MENDELEEV COMMUNICATIONS | 2024年 / 34卷 / 02期
基金：
俄罗斯科学基金会;
关键词：
kinetic resolution; azlactone; amino acids; chiral-at-metal; cobalt( iii ) complexes; AMINO-ACIDS; SCHIFF-BASES;
D O I：
10.1016/j.mencom.2024.02.015
中图分类号：
O6 [化学];
学科分类号：
0703 ;
摘要：
A family of well-defined octahedral cationic chiral-atcobalt( iii ) catalysts based on ( R , R )-1,2-cyclohexanediamine and ( R , R )-1,2-diphenylethylenediamine has been examined in the dynamic kinetic resolution of an azlactone derived from N -benzoyl- tert -leucine . The reactions catalyzed by 10 mol% of Co iii complexes in the presence of 1 M aqueous NaOH solution under phase-transfer alcoholysis afforded the corresponding benzyl ester of tert -leucine with up to 76% yield and up to 66% enantioselectivity ( ee ).
引用
收藏
页码：206 / 208
页数：3
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