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- W2126893841 abstract "Chitin, a polymer of N-acetylglucosamine units with β-1,4-glycosidic linkages, is the most abundant marine biomass. Chitin monomers containing N-acetyl groups are useful precursors to various fine chemicals and medicines. However, the selective conversion of robust chitin to N-acetylated monomers currently requires a large excess of acid or a long reaction time, which limits its application. We demonstrate a fast catalytic transformation of chitin to monomers with retention of N-acetyl groups by combining mechanochemistry and homogeneous catalysis. Mechanical-force-assisted depolymerization of chitin with a catalytic amount of H2SO4 gave soluble short-chain oligomers. Subsequent hydrolysis of the ball-milled sample provided N-acetylglucosamine in 53 % yield, and methanolysis afforded 1-O-methyl-N-acetylglucosamine in yields of up to 70 %. Our process can greatly reduce the use of acid compared to the conventional process." @default.
- W2126893841 created "2016-06-24" @default.
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- W2126893841 date "2015-11-01" @default.
- W2126893841 modified "2023-10-14" @default.
- W2126893841 title "Catalytic Depolymerization of Chitin with Retention of<i>N</i>-Acetyl Group" @default.
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- W2126893841 doi "https://doi.org/10.1002/cssc.201501224" @default.
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