Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
10604309 | Carbohydrate Polymers | 2011 | 10 Pages |
Abstract
⺠Di-tert-butyldimethylsilyl-3,6-O-protected chitosan used as a precursor for selective N-modification. ⺠100% N,N,N-trimethyl chitosan achieved with methyl iodide as methylating agent. ⺠N-Alkyl chitosan (propyl, butyl, hexyl) synthesized through stepwise reductive alkylation. ⺠65-72% N,N-dimethylation of N-alkyl chitosan derivatives with dimethyl sulfate used as the methylating agent. ⺠Detailed structure characterization with NMR with no O-methylation detected.
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Authors
Berglind E. Benediktsdóttir, Vivek S. Gaware, Ãgmundur V. Rúnarsson, SigrÃður Jónsdóttir, Knud J. Jensen, Már Másson,