title: Bio-waste corn-cob cellulose supported poly(hydroxamic acid) copper complex for Huisgen reaction: Waste to wealth approach.
abstract: Corn-cob cellulose supported poly(hydroxamic acid) Cu(II) complex was prepared by the surface modification of waste corn-cob cellulose through graft copolymerization and subsequent hydroximation. The complex was characterized by IR, UV, FESEM, TEM, XPS, EDX and ICP-AES analyses. The complex has been found to be an efficient catalyst for 1,3-dipolar Huisgen cycloaddition (CuAAC) of aryl/alkyl azides with a variety of alkynes as well as one-pot three-components reaction in the presence of sodium ascorbate to give the corresponding cycloaddition products in up to 96% yield and high turn over number (TON 18,600) and turn over frequency (TOF 930h-1) were achieved. The complex was easy to recover from the reaction mixture and reused six times without significant loss of its catalytic activity.
authors.affiliation: Faculty of Industrial Sciences and Technology, University Malaysia Pahang, Gambang 26300, Pahang, Malaysia; Department of Chemistry, Jessore University of Science and Technology, Jessore 7408, Bangladesh.
authors.forename: Bablu Hira
authors.initials: BH
authors.lastname: Mandal
authors.affiliation: Faculty of Science and Natural Resources, University Malaysia Sabah, Kota Kinabalu 88400, Sabah, Malaysia.
authors.forename: Md Lutfor
authors.initials: ML
authors.lastname: Rahman
authors.affiliation: Faculty of Industrial Sciences and Technology, University Malaysia Pahang, Gambang 26300, Pahang, Malaysia.
authors.forename: Mashitah Mohd
authors.initials: MM
authors.lastname: Yusoff
authors.affiliation: Faculty of Industrial Sciences and Technology, University Malaysia Pahang, Gambang 26300, Pahang, Malaysia.
authors.forename: Kwok Feng
authors.initials: KF
authors.lastname: Chong
authors.affiliation: Faculty of Industrial Sciences and Technology, University Malaysia Pahang, Gambang 26300, Pahang, Malaysia. Electronic address: sha_inha@yahoo.com.
authors.forename: Shaheen M
authors.initials: SM
authors.lastname: Sarkar
mesh_terms: D000480:Alkynes; D001386:Azides; D002384:Catalysis; D002482:Cellulose / Q000737:chemistry*; D003300:Copper / Q000737:chemistry*; D006877:Hydroxamic Acids / Q000737:chemistry*; D003313:Zea mays / Q000737:chemistry*
chemical_list: D000480:Alkynes; D001386:Azides; D006877:Hydroxamic Acids; D003300:Copper; D002482:Cellulose
keywords: Cellulose; Copper; Corn-cob; Huisgen reaction; Poly(hydroxamic acid)