Synthesis of 4-sulfonatooxy-2,2,6,6-tetramethylpiperidine-1-yloxyl derivatives for investigation of ionic liquids

被引:23
|
作者
Strehmel, Veronika [1 ]
Rexhausen, Hans [1 ]
Strauch, Peter [2 ]
机构
[1] Univ Potsdam, Inst Chem Appl Polymer Chem, D-14476 Potsdam, Germany
[2] Univ Potsdam, Inst Chem Inorgan Chem, D-14476 Potsdam, Germany
关键词
spin probes; ESR spectroscopy; nitroxides; ionic liquids;
D O I
10.1016/j.tetlet.2007.11.150
中图分类号
O62 [有机化学];
学科分类号
070303 ; 081704 ;
摘要
Direct sulfonation of 4-hydroxy-2,2,6,6-tetramethylpiperidine-1-yloxyl using chlorosulfuric acid trimethylsilylester results in 4-sulfonatooxy-2,2,6,6-tetra-methylpiperidine- 1-yloxyl in 94% yield that is the basis for the synthesis of potassium 4-sulfonatooxy-2,2,6,6-tetramethylpiperidine-1-yloxyl and sodium 4-sulfonatooxy-2,2,6,6-tetramethylpiperidine-1-yloxyl. These nitroxides can be employed as spin probes to investigate properties of ionic liquids in the molecular domain. (c) 2007 Elsevier Ltd. All rights reserved.
引用
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页码:586 / 588
页数:3
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