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Issue 5, 2016
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A novel, efficient, and recyclable biocatalyst for Michael addition reactions and its iron(III) complex as promoter for alkyl oxidation reactions

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Abstract

Chitosan-g-poly(2-cyano-1-(pyridin-3-yl)allyl acrylate) (Cs-g-PCPA), having a grafting percentage (G%) of 64%, was prepared and was then subjected to complexation with iron(III) (Cs-g-PCPA/Fe(III)). The results of the catalytic studies demonstrated that Cs-g-PCPA serves as an efficient, recyclable and eco-friendly, basic catalyst for Michael addition reactions, which produce adducts in high yields under mild conditions. Moreover, a Cs-g-PCPA-supported iron(III) complex was prepared and was then characterized by using FESEM, XRD, TGA, and XPS. In addition, the EDS plot of the Fe(III) chelate confirms the presence of a relatively high amount (13%) of Fe(III). The Cs-g-PCPA (G% = 64)-supported iron(III) complex (Cs-g-PCPA/Fe(III)) in the presence of H2O2 can be used to oxidize methyl pyridazinyl carbonitriles to form the corresponding fused furan derivatives efficiently. These polymeric catalysts are stable such that they can be recycled and reused more than five times without losing their catalytic activity.

Graphical abstract: A novel, efficient, and recyclable biocatalyst for Michael addition reactions and its iron(iii) complex as promoter for alkyl oxidation reactions

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Publication details

The article was received on 08 Jul 2015, accepted on 16 Sep 2015 and first published on 21 Sep 2015


Article type: Paper
DOI: 10.1039/C5CY01034A
Citation: Catal. Sci. Technol., 2016,6, 1410-1416

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    A novel, efficient, and recyclable biocatalyst for Michael addition reactions and its iron(III) complex as promoter for alkyl oxidation reactions

    K. D. Khalil, E. I. Ibrahim and F. A. Al-Sagheer, Catal. Sci. Technol., 2016, 6, 1410
    DOI: 10.1039/C5CY01034A

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