Stereoselective Synthesis of Norephedrine and Norpseudoephedrine by Using Asymmetric Transfer Hydrogenation Accompanied by Dynamic Kinetic Resolution

被引:46
|
作者
Lee, Hyeon-Kyu [1 ,2 ]
Kang, Soyeong [1 ]
Choi, Eun Bok [1 ]
机构
[1] Korea Res Inst Chem Technol, Bioorgan Sci Div, Taejon 305600, South Korea
[2] Univ Sci & Technol, Taejon 305333, South Korea
来源
JOURNAL OF ORGANIC CHEMISTRY | 2012年 / 77卷 / 12期
关键词
ENANTIOSELECTIVE SYNTHESIS; COMPLEX; KETONES; REDUCTION; ALCOHOLS; OLEFINS; PURE;
D O I
10.1021/jo300867y
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Each of the enantiomers of both norephedrine and norpseudoephedrine were stereoselectively prepared from the common, prochiral cyclic sulfamidate imine of racemic 1-hydroxy-1-phenyl-propan-2-one by employing asymmetric transfer hydrogenation (ATH) catalyzed by the well-defined chiral Rh-complexes, (S,S)- or (R,R)-Cp*RhCl(TsDPEN), and HCO2H/Et3N as the hydrogen source. The ATH processes are carried out under mild conditions (rt, 15 min) and are accompanied by dynamic kinetic resolution.
引用
收藏
页码:5454 / 5460
页数:7
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