| Literature DB >> 27842811 |
Bablu Hira Mandal1, Md Lutfor Rahman2, Mashitah Mohd Yusoff3, Kwok Feng Chong3, Shaheen M Sarkar4.
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.Entities:
Keywords: Cellulose; Copper; Corn-cob; Huisgen reaction; Poly(hydroxamic acid)
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Year: 2016 PMID： 27842811 DOI： 10.1016/j.carbpol.2016.09.021
Source DB: PubMed Journal: Carbohydr Polym ISSN： 0144-8617 Impact factor: 9.381