Acylative kinetic resolution of racemic heterocyclic amines with (R)-2-phenoxypropionyl chloride

被引:13
|
作者
Vakarov, Sergey A. [1 ]
Gruzdev, Dmitry A. [1 ]
Chulakov, Evgeny N. [1 ]
Sadretdinova, Liliya Sh. [1 ]
Tumashov, Andrey A. [1 ]
Pervova, Marina G. [1 ]
Ezhikova, Marina A. [1 ]
Kodess, Mikhail I. [1 ,2 ]
Levit, Galina L. [1 ]
Krasnov, Victor P. [1 ]
Charushin, Valery N. [1 ,2 ]
机构
[1] RAS, Postovsky Inst Organ Synth, Ural Branch, 22-20 S Kovalevskoy Akad Skaya St, Ekaterinburg 620990, Russia
[2] Ural Fed Univ, 19 Mira St, Ekaterinburg 620002, Russia
基金
俄罗斯科学基金会;
关键词
DIASTEREOSELECTIVE ACYLATION; N-TOSYL-(S)-PROLYL CHLORIDE; EFFICIENT;
D O I
10.1016/j.tetasy.2016.10.004
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The acylative kinetic resolution of racemic heterocyclic amines such as 3,4-dihydro-3-methyl-2H-[1,4] benzoxazines, 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine, 2-methyl-1,2,3,4-tetrahydro-quinolines and 2-methylindoline with enantiopure (R)-2-phenoxypropionyl chloride has been studied. It has been found that acylation of 3,4-dihydro-3-methyl-2H-[1,4]benzothiazine proceeds with the best stereoselectively when compared with other racemic amines. An efficient method for the preparation of (S)-3,4-dihydro-3-methyl-2H-[1,4]benzothiazine (99.4% ee) via a kinetic resolution protocol was developed. The possibility of recycling (R)-2-phenoxypropionic acid has been demonstrated. (C) 2016 Elsevier Ltd. All rights reserved.
引用
收藏
页码:1231 / 1237
页数:7
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