Microwave-Assisted,Rapid, Solvent-Free Aza-Michael Reaction by Perchloric Acid Impregnated on Silica Gel |
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| Authors: | Surya Prakash Singh T Vijaya Kumar M Chandrasekharam L Giribabu P Yella Reddy |
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| Institution: | 1. Department of Applied Chemistry , Graduate School of Engineering, Osaka University , Suita, Osaka, Japan singhsp@chem.eng.osaka-u.ac.jp;3. Nano Materials Laboratory, Inorganic and Physical Chemistry Division, Indian Institute of Chemical Technology , Hyderabad, India |
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| Abstract: | Highly efficient solvent-free aza-Michael additions of a variety of amines to α,β-unsaturated carbonyl compounds under microwave-irradiation conditions catalyzed by perchloric acid impregnated on silica gel (HClO4/SiO2) is reported. The reactions are completed within 2–7 min in a microwave oven to produce the corresponding adducts in excellent yields, and the catalyst can be recovered and reused. |
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| Keywords: | Aza-Michael reaction HClO4/SiO2 hydroamination microwave irradiation reusable catalyst solvent-free |
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