有机化学 ›› 2001, Vol. 21 ›› Issue (2): 150-154. 上一篇    下一篇

研究论文

Co(Ⅲ)(Salen)催化的外消旋环氧化合物不对称开环

张雅文;金筱青;李明;沈宗旋   

  1. 苏州大学化学化工系
  • 发布日期:2001-02-25

Co(Ⅲ)(Salen)-(catalyzed asymmetric ring-opening of racemic epoxides

Zhang Yawen;Jin Xiaoqing;Li Ming;Shen Zongxuan   

  • Published:2001-02-25

用较易得到的(R,R)-1,2-二苯基乙二胺(DPEDA)与-2-羟基-5-甲基-3-叔丁基苯甲醛缩合,得到手性Salen,再与Co络合,氧化后得到Salen型手性催化剂(R,R)-2。(R,R)-2可催化外消旋环氧化物的动力学水解拆分,所得手性二醇和手性环氧化合物对映体过量最高分别可达99%和92%。

关键词: 外消旋, 消旋体拆分, 环氧化物, 不对称, 开环, 鈷络合物, 水解

Condensation of (R, R)-DPEDA with 3-tert-butyl-2- hydroxy-5- methylbenzaldehyde gave the chiral Salen (R, R)- 13, which reacted with cobalt acetate and then oxidized to give the Co(Ⅲ)(Salen) complex (R,R)-2, which catalyzes the asymmetric ring-opening of racemic epoxides to afford chiral diols and epoxides with the ee up to 99% and 92%, respectively.

Key words: MESOTOMY, EPOXIDE, ASYMMETRY, OPEN CYCLE, HYDROLYSIS

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