高等学校化学学报

高等学校化学学报 ›› 2000, Vol. 21 ›› Issue (S1): 43.

• Analytical Sciences • 上一篇    下一篇

A Method to Uncouple Meso- and DI-Isomers of Diethyl-2,3-Dicyano-2,3-Diphenylsuccinate-Recrystallization in Mixed Solvent and Theoretical Analysis

HUANG Hong-Jun, YAN Jun, ZHANG Wen-Yu, REN Feng-Zhi, WANG Xing-Fang   

  1. Physics-chemistry section, Mechanical Engineering College, Shijiazhuang, Hebei province 050003
  • 出版日期:2000-12-31 发布日期:2000-12-31
  • 基金资助:

    Mechanical Engineering college research foundation.

A Method to Uncouple Meso- and DI-Isomers of Diethyl-2,3-Dicyano-2,3-Diphenylsuccinate-Recrystallization in Mixed Solvent and Theoretical Analysis

HUANG Hong-Jun, YAN Jun, ZHANG Wen-Yu, REN Feng-Zhi, WANG Xing-Fang   

  1. Physics-chemistry section, Mechanical Engineering College, Shijiazhuang, Hebei province 050003
  • Online:2000-12-31 Published:2000-12-31
  • Supported by:

    Mechanical Engineering college research foundation.

PDF (PC)

被引次数

63

摘要：

Diethyl-2,3-Dicyano-2,3-Diphenylsuccinate is a novel carbon-carbon bond macro-molecular initiator. The meso- and dl-isomers can be obtained as mixture while preparing the initiator by the Cu2+-catalyzed oxidative coupling of α-cyano-phenthylacetate. However, their uncoupling is hard The authors have finally found recrystallization in mixed solvent (CCl4:CH3OH=9:1) is an effective method to uncouple the isomers. By this method, we obtained pure meso-(Ⅰ) and dl-(Ⅱ) confounds. HNMR spectra identified their purity and structure.

Abstract:

Diethyl-2,3-Dicyano-2,3-Diphenylsuccinate is a novel carbon-carbon bond macro-molecular initiator. The meso- and dl-isomers can be obtained as mixture while preparing the initiator by the Cu2+-catalyzed oxidative coupling of α-cyano-phenthylacetate. However, their uncoupling is hard The authors have finally found recrystallization in mixed solvent (CCl4:CH3OH=9:1) is an effective method to uncouple the isomers. By this method, we obtained pure meso-(Ⅰ) and dl-(Ⅱ) confounds. HNMR spectra identified their purity and structure.

TrendMD: