Novel Multiple-Acidic Ionic Liquids: Catalysts for Environmentally Friendly Benign Synthesis of trans-β-Nitrostyrenes under Solvent-Free Conditions

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• 作者：Anguo Ying ; Songlin Xu ; Shuo Liu ; Yuxiang Ni ; Jianguo Yang ; Chenglin Wu
• 刊名：Industrial & Engineering Chemistry Research
• 出版年：2014
• 出版时间：January 15, 2014
• 年：2014
• 卷：53
• 期：2
• 页码：547-552
• 全文大小：321K
• ISSN：1520-5045

文摘

A series of novel multiple-acidic ionic liquids, sulfated from the low-cost starting material 2-aminoethanol, were introduced as catalysts for the Henry reaction of versatile aldehydes and nitroalkane under solvent-free conditions. The ionic liquid with hydrogen sulfate as a counteranion showed the best catalytic efficiency and gave the corresponding trans-尾-nitrostyrenes in good to excellent yields. More importantly, the ionic liquid catalyst could be readily recovered and reused six times without considerable loss of its catalytic activity.