کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
5412780 | 1393448 | 2011 | 6 صفحه PDF | دانلود رایگان |
عنوان انگلیسی مقاله ISI
Domino Knoevenagel condensation, Michael addition, and cyclization using ionic liquid, 2-hydroxyethylammonium formate, as a recoverable catalyst
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موضوعات مرتبط
مهندسی و علوم پایه
شیمی
شیمی تئوریک و عملی
پیش نمایش صفحه اول مقاله
چکیده انگلیسی
The Knoevenagel condensation reaction of aromatic aldehydes with malononitrile or dimedone was investigated. Also, the three-component and one-pot synthesis of 2-amino-5-oxo-4-aryl-4,5-dihydropyrano[3,2-c]chromene-3-carbonitrile derivatives by condensing 4-hydroxycoumarin, aldehydes and malononitriles using a catalytic amount of 2-hydroxyethylammonium formate as an effective ionic liquid without using any additional co-catalyst under solvent-free conditions at room temperature is reported. Furthermore, the domino Knoevenagel condensation, conjugate addition, and cyclization for the preparation of tetrahydrobenzo[b]pyran, and spirooxindole derivatives in high atomic efficiency take place in excellent yields.
ناشر
Database: Elsevier - ScienceDirect (ساینس دایرکت)
Journal: Journal of Molecular Liquids - Volume 158, Issue 2, 15 January 2011, Pages 145-150
Journal: Journal of Molecular Liquids - Volume 158, Issue 2, 15 January 2011, Pages 145-150
نویسندگان
H.R. Shaterian, M. Arman, F. Rigi,