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题名: Azole-Anion-Based Aprotic Ionic Liquids: Functional Solvents for Atmospheric CO2 Transformation into Various Heterocyclic Compounds
作者: Zhao, Yanfei1; Wu, Yunyan1; Yuan, Guangfeng1; Hao, Leiduan1; Gao, Xiang1; Yang, Zhenzhen1; Yu, Bo1; Zhang, Hongye1; Liu, Zhimin1
关键词: atmospheric chemistry ; azoles ; carbon dioxide ; heterocyclic compounds ; ionic liquids
刊名: CHEMISTRY-AN ASIAN JOURNAL
发表日期: 2016-10-01
卷: 11, 期:19, 页:2735-2740
收录类别: SCI
英文摘要: The chemical transformation of atmospheric CO2 is of great significance yet still poses a great challenge. Herein, azole-anion-based aprotic ionic liquids (ILs) were synthesized by the deprotonation of weak proton donors (e.g., 2-methylimidazole, 4-methylimidazole, and 2,4-dimethylimidazole) with tetrabutylphosphonium hydroxide, [Bu4P][OH]. We found that these ILs, such as [Bu4P][2-MIm], could activate atmospheric CO2 through the formation of carbamates. The resultant carbamate intermediates could further react with various types of substrate, including propargylic alcohols, 2-aminobenzonitriles, ortho-phenylenediamines, and 2-aminothiophenol, thereby producing alpha-alkylidene cyclic carbonates, quinazoline-2,4(1 H,3 H)-diones, benzimidazolones, and benzothiazoline, respectively, in moderate-to-good yields. Thus, we have achieved the transformation of CO2 at atmospheric pressure, and we expect this method to open up new routes for the synthesis of various oxygen-containing heterocyclic compounds under metal-free conditions.
语种: 英语
内容类型: 期刊论文
URI标识: http://ir.iccas.ac.cn/handle/121111/35136
Appears in Collections:胶体、界面与化学热力学实验室_期刊论文

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作者单位: 1.Chinese Acad Sci, Inst Chem, 2 North First St, Beijing 100190, Peoples R China
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