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KMID : 1059520110550040644
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Journal of the Korean Chemical Society
2011 Volume.55 No. 4 p.644 ~ p.649
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Polyaniline/SiO2 Catalyzed One-pot Mannich Reaction: An Efficient Synthesis of β-amino Carbonyl Compounds
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Ajeet A. Yelwande
Balasaheb R. Arbad
Machhindra K. Lande
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Abstract
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Polyaniline/SiO2 catalyzed one-pot mannich reaction of acetophenone, aromatic aldehydes and aromatic amines are carried out in ethanol to afford various β-amino ketones. The various wt% of polyaniline were supported on pure silica synthesized by using chemical oxidative method. The catalyst prepared has been characterized by means of thermal analysis (TG-DTA), X-ray diffraction (XRD), scanning electron microscopy (SEM) energy dispersive spectroscopy (EDS), and Fourier transform infrared spectroscopy (FT-IR). Solvent stability of catalyst was tested using UV-Visible spectroscopy. This protocol has several advantages such as high yield, simple work up procedure, non-toxic, clean, easy recovery and reusability of the catalyst.
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KEYWORD
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Chemical oxidative method, Polyaniline/SiO2, Mannich reaction, β-amino carbonyl compounds
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