Chiral trans-1,2-diaminocyclohexane derivatives as chiral solvating agents for carboxylic acids
作者:Mariappan Periasamy、Manasi Dalai、Meduri Padmaja
DOI:10.1007/s12039-010-0090-z
日期:2010.7
Efficient use of the readily accessible chiral C 2-symmetric acyclic diamines (1–2) as well as macrocyclic amines (3–5) containing trans-1,2-diaminocyclohexyl moiety as chiral solvating agents (CSA) for the determination of enantiomeric excess of representative carboxylic acids (6–7) and an amino acid derivative (8) is illustrated. The enantiomeric composition of different carboxylic acids estimated
有效地使用容易获得的手性C 2对称无环二胺(1-2)以及含有反式-1,2-二氨基环己基部分的大环胺(3-5)作为手性溶剂化剂(CSA)测定对映体过量说明了代表性的羧酸(6-7)和氨基酸衍生物(8)的组成。不同羧酸的对映体组成此处由1估算1 H NMR方法基于相应次甲基质子信号的积分,与使用HPLC方法测定的结果具有良好的相关性。数据是按照在溶液中多分子非对映体配合物,其中渲染的代表羧酸,以及用于对映异构体的NMR信号的良好分离的形成Ñ -Ts苯基甘氨酸(高达ΔΔ δ = 0.295 ppm时,118赫兹) 。