CHIRAL DISCRIMINATION IN THE LIQUID-PHASE - EXCESS VOLUMES OF BINARY-MIXTURES OF AMINO-ACID DERIVATIVES

被引：16

作者：

LEPORI, L ^{[1
]}

KOPPENHOEFER, B ^{[1
]}

机构：

[1] UNIV TUBINGEN,INST ORGAN CHEM,D-72076 TUBINGEN,GERMANY

来源：

JOURNAL OF PHYSICAL CHEMISTRY | 1994年 / 98卷 / 27期

关键词：

D O I：

10.1021/j100078a031

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

Volume changes on mixing the enantiomers of N-trifluoroacetylamino acid methyl esters (N-TFA-amino acid-OMe) were determined at 25 degrees C by means of a high-precision vibrating-tube densimeter. The excess molar volumes (V-E) for the racemic mixtures of N-TFA-Ala-OMe 1, N-TFA-Val-OMe 2, and N-TFA-Leu-OMe 3, were found as V-E = 0.0098, -0.0458, and 0.035 cm(3) mol(-1), respectively. For 2 and 3, these volumetric effects of discriminating interactions between enantiomers in the liquid phase are the largest ever observed.

引用

页码：6862 / 6864

页数：3