Aggregation behaviour of chiral ionic liquids

被引:15
|
作者
Schulz, Peter S. [1 ]
Schneiders, Karola [1 ]
Wasserscheid, Peter [1 ]
机构
[1] Univ Erlangen Nurnberg, Chair Chem React Engn, D-91058 Erlangen, Germany
关键词
DIELS-ALDER REACTIONS; SPIN-ECHO H-1; MICHAEL ADDITION; NMR; DIFFUSION; ORGANOCATALYSTS; CYCLODEXTRINS; CONDUCTIVITY; SOLVENTS; SALTS;
D O I
10.1016/j.tetasy.2009.10.010
中图分类号
O61 [无机化学];
学科分类号
070301 ; 081704 ;
摘要
The diastereomeric ionic liquid (IL) (1R,2S)-ephedrinium (RS)-methoxytrifluorophenylacetate 1 was synthesized and its aggregation behavior and diastereomeric interaction were investigated using two independent methods. The aggregation number of the IL in methylene chloride was determined by diffusion ordered NMR spectroscopy. Furthermore the concentration dependence of the signal split of the two diastereomeric ILs (1R,2S)-ephedrinium (R)-methoxytrifluorophenylacetate and (IR,2S)-ephedrinium (S)-methoxytrifluorophenylacetate was measured and could be linked to the aggregation number. (C) 2009 Elsevier Ltd. All rights reserved.
引用
收藏
页码:2479 / 2481
页数:3
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