期刊
TETRAHEDRON LETTERS
卷 52, 期 41, 页码 5308-5310出版社
PERGAMON-ELSEVIER SCIENCE LTD
DOI: 10.1016/j.tetlet.2011.08.010
关键词
Imidazole; Ionic liquid; Organic synthesis; Substituent
资金
- U.S. Department of Energy's Office of Basic Energy Science, Division of Materials Sciences and Engineering
- UT-Battelle, LLC.
The functionality at the C-2 position of the imidazole ring plays a key role in defining the chemical properties of the imidazoles and their corresponding ionic liquids. Imidazoles 1-6 with different C-2 functionality were synthesized and their corresponding ionic liquids were systematically investigated. Based on their physical properties the six imidazoles can be divided into three groups. (1) The imidazoles 2 and 3 are capable of self-polymerization to form poly(ionic liquid)s, and they are characterized with a strong leaving group at the C-2 position. (2) The imidazoles 4 and 5 can form ionic liquids, but they are very sensitive to moisture. (3) The imidazoles 1 and 6 can form stable ionic liquids, and their stabilities were influenced by the electronic effects of the substituents at the C-2 position. Published by Elsevier Ltd.
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