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Highly active cellulose-supported poly(hydroxamic acid)–Cu(II) complex for Ullmann etherification

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Show simple item record Jian Fui, Choong Ting, Tang Xin Sarjadi, Mohd Sani Amin, Zarina Sarkar, Shaheen M. Musta, Baba Rahman, Md Lutfor 2021-04-20T14:28:57Z 2021-04-20T14:28:57Z 2021
dc.description peer-reviewed en_US
dc.description.abstract Highly active natural pandanus-extracted cellulose-sup ported poly(hydroxamic acid)−Cu(II) complex 4 was synthesized. The surface of pandanus cellulose was modified through graft copolymerization using purified methyl acrylate as a monomer. Then, copolymer methyl acrylate was converted into a bidentate chelating ligand poly(hydroxamic acid) via a Loosen rearrangement in the presence of an aqueous solution of hydroxylamine. Finally, copper species were incorporated into poly- (hydroxamic acid) via the adsorption process. Cu(II) complex 4 was fully characterized by Fourier transform infrared (FTIR), field emission scanning electron microscopy (FE-SEM), energy-dispersive X-ray (EDX), transmission electron microscopy (TEM), inductively coupled plasma optical emission spectrometry (ICP-OES), thermogravimetric analysis (TGA), X-ray diffraction (XRD), and X-ray photoelectron spectroscopy (XPS) analyses. The cellulose-supported Cu(II) complex 4 was successfully applied (0.005 mol %) to the Ullmann etherification of aryl, benzyl halides, and phenacyl bromide with a number of aromatic phenols to provide the corresponding ethers with excellent yield [benzyl halide (70−99%); aryl halide (20−90%)]. Cu(II) complex 4 showed high stability and was easily recovered from the reaction mixture. It could be reused up to seven times without loss of its original catalytic activity. Therefore, Cu(II) complex 4 can be commercially utilized for the preparation of various ethers, and this synthetic technique could be a part in the synthesis of natural products and medicinal compounds. en_US
dc.language.iso eng en_US
dc.publisher American Chemical Society en_US
dc.relation.ispartofseries ACS Omega;6 (10), pp. 6766-6779
dc.subject medicinal compounds en_US
dc.title Highly active cellulose-supported poly(hydroxamic acid)–Cu(II) complex for Ullmann etherification en_US
dc.type info:eu-repo/semantics/article en_US
dc.type.supercollection all_ul_research en_US
dc.type.supercollection ul_published_reviewed en_US
dc.identifier.doi 10.1021/acsomega.0c05840
dc.contributor.sponsor University Malaysia Sabah en_US
dc.relation.projectid GUG0382-1/2019 en_US
dc.rights.accessrights info:eu-repo/semantics/openAccess en_US

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