Basic ionic liquids based on monoquaternized 1,4-diazobicyclo[2.2.2]octane (dabco) and dicyanamide anion: Physicochemical and solvent properties

被引：38

作者：

Chiappe, Cinzia ^{[1
]}

Melai, Bernardo ^{[1
]}

Sanzone, Angelo ^{[1
]}

Valentini, Giulia ^{[1
]}

机构：

[1] Univ Pisa, Dept Chem & Ingn Chem, I-56126 Pisa, Italy

来源：

PURE AND APPLIED CHEMISTRY | 2009年 / 81卷 / 11期

关键词：

basic ILs; dabco; ionic liquids; physicochemical properties; solvent properties; SOLVATOCHROMIC COMPARISON METHOD; C COUPLING REACTIONS; RECYCLABLE CATALYST; HIGHLY EFFICIENT; HECK REACTION; COMPLEX; POLARITIES; PARAMETERS; SOLVATION; PALLADIUM;

D O I：

10.1351/PAC-CON-08-11-01

中图分类号：

O6 [化学];

学科分类号：

0703 ;

摘要：

In this paper, we report on the synthesis and application of monosubstituted diazabicyclo[.2.2.2]octane (dabco) cations associated with a basic anion, dicyanamide. Key properties of these salts-phase transitions, density, and conductivity-were measured and compared to those of other common ionic liquids (ILs). Moreover, solvatochromic dyes were used to assess their solvation properties. The Heck cross-coupling reaction was evaluated in dabco-based ILs and compared with the behavior in common unfunctionalized ILs, evidencing good catalyst stability and a high recyclability in these basic ILs.

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页码：2035 / 2043

页数：9

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