Preparation of enantiomeric pure (−)-(3R,4S)-1-benzyl-3,4-epoxypiperidine and enriched (−)-(R)-1-Benzyl-3-hydroxy-1,2,3,6-tetrahydropyridine by kinetic separation of (±)-1-benzyl-3,4-epoxypiperidine under the action of chiral lithium amides
作者:G. V. Grishina、I. S. Veselov、V. A. Davankov、M. M. Il’in、N. S. Zefirov
DOI:10.1134/s1070428008020164
日期:2008.2
Enantiomeric pure (−)-(3R,4S)-1-benzyl-3,4-epoxypiperidine and (−)-(R)-1-benzyl-3-hydroxy-1,2,3,6-tetrahydropyridine with enantiomeric excess 61.9% were obtained by kinetic separation of (±)-1-benzyl-3,4-epoxypiperidine under the action of lithium salt (+)-(S)-2-[(pyrrolidin-1-yl)methyl]pyrrolidine. The sterical direction of the kinetic separation of (±)-1-benzyl-3,4-epoxypiperidine and absolute configurations of the target products were established.
在锂盐(+)-(S)-2-[(吡咯烷-1,2,3,6-四氢哌啶]的作用下,通过动力学分离获得了对映体纯度为 61.在锂盐(+)-(S)-2-[(吡咯烷-1-基)甲基]吡咯烷的作用下,(±)-1-苄基-3,4-环氧哌啶通过动力学分离得到了 9%的对映体。确定了(±)-1-苄基-3,4-环氧哌啶动力学分离的立体方向和目标产物的绝对构型。