Synthesis of chiral 18-crown-6 ethers containing lipophilic chains and their enantiomeric recognition of chiral ammonium picrates
Synthesis of chiral 18-crown-6 ethers containing lipophilic chains and their enantiomeric recognition of chiral ammonium picrates
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DOI：
10.1016/j.tetasy.2005.06.039
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发表时间：
2005-08-01
影响因子：
--
通讯作者：
Gil, S
中科院分区：
文献类型：
--
作者：
Colera, M;Costero, AM;Gil, S
合成了四个新的手性18-冠-6醚，用于对映体的识别和萃取。研究了取代基的亲脂性和体积对不同手性苦味酸铵在CD 3CN中络合作用的影响。通过萃取实验，将铵盐的外消旋水溶液富集在一个对映体中，并计算了对映体过量。(c)2005爱思唯尔有限公司保留所有权利。
Four new chiral 18-crown-6 ethers have been prepared to be used in enantiomeric recognition and extraction. The influence of the lipophilic character and bulkiness of the substituents on the complexation of different chiral ammonium picrates in CD3CN has been evaluated. Racemic aqueous solutions of the ammonium salts have been enriched in one enantionter after extraction experiments, and the enantiomeric excesses have been calculated. (c) 2005 Elsevier Ltd. All rights reserved.