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Chitosan is a polyaminosaccharide, normally obtained by alkaline deacetylation of chitin . Chitosan, even having a large amount of ¨CNH2 group, is not found to be effective
for base catalyzed reactions . The generally used method is to treat with HCl and then to form chitosan beads by adding it into the NaOH solution. It will be a better choice to functionalize the chitosan avoiding the use of acids and alkalis to obtain active base catalyst.

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