کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
51904 | 46858 | 2008 | 4 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Knoevenagel condensation reaction catalyzed by task-specific ionic liquid under solvent-free conditions
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کلمات کلیدی
موضوعات مرتبط
مهندسی و علوم پایه
مهندسی شیمی
کاتالیزور
پیش نمایش صفحه اول مقاله
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چکیده انگلیسی
A task-specific ionic liquid, [H3N+–CH2–CH2–OH][CH3COO−] was synthesized and used as catalyst in the Knoevenagel condensation reaction of various kinds of aromatic aldehydes with ethyl cyanoacetate or malononitrile. α,β-Unsaturated carbonyl compounds were obtained in reasonable yields when the [H3N+–CH2–CH2–OH][CH3COO−] catalyzed Knoevenagel reaction was carried out at room temperature for several to 60 min under solvent-free conditions. Only E-isomers were detected. The task-specific ionic liquid after removed water could be recycled and reused for five times without noticeably decreasing the catalytic activity. The mechanism of the [H3N+–CH2–CH2–OH][CH3COO−] catalyzed Knoevenagel reaction was discussed.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Catalysis Communications - Volume 9, Issue 7, 1 April 2008, Pages 1571–1574
Journal: Catalysis Communications - Volume 9, Issue 7, 1 April 2008, Pages 1571–1574
نویسندگان
Caibo Yue, Aiqin Mao, Yunyang Wei, Minjie Lü,