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

Synthesis of chitosan‐graft‐poly[2‐cyano‐1‐(pyridin‐3‐yl)allyl acrylate] copolymer from a novel monomer, prepared using a Morita–Baylis–Hillman reaction, and characterization of its antimicrobial activity A novel way is described to modify the natural polymer chitosan via a Morita–Baylis–Hillman (MBH) reaction. The MBH acrylate monomer was synthesized and then grafted onto chitosan using a persulfate–sulfite redox system.

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