Chitosan-g-poly(4-acrylamidobenzenesulfonamide) copolymers: synthesis, characterization, and bioactivity

Al‐Sagheer, Fakhreia; Khalil, Khaled D.; Mahmoud, Huda; Ibrahim, Enas I.

doi:10.1007/s10965-017-1381-6

Cited by 4 publications

(1 citation statement)

References 34 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Recently, chitosan has been used as a "green" support for several transitional metal catalysts and as a solid base catalyst for many organic reactions. [17][18][19] The chitosan graft cross-linked copolymer Cs-g-PCPA was found to have higher thermal stability than the unmodified chitosan and, as a result, it can be used effectively for higher temperature catalytic reactions. 12,13 This process, which has attracted enormous attention as one of the most efficient C-C bond forming reaction in organic synthesis, is typically carried out in presence of homogeneous or heterogeneous basic catalysts.…”

Section: "Twelve Principles Of Greenmentioning

confidence: 99%

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

Khalil

Ibrahim

Al‐Sagheer

2016

Catal. Sci. Technol.

View full text Add to dashboard Cite

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.

show abstract

Section: "Twelve Principles Of Greenmentioning

confidence: 99%