Tosyl chitin

Recent progress of basic and application studies in chitin chemistry was reviewed by Kurita (2001) with emphasis on the controlled modification reactions for the preparation of chitin derivatives. The reactions discussed include hydrolysis of main chain, deacetylation, acylation, M-phthaloylation, tosylation, alkylation, Schiff base formation, reductive alkylation, 0-carboxymethylation, N-carboxyalkylation, silylation, and graft copolymerization. For conducting modification reactions in a facile and controlled manner, some soluble chitin derivatives are convenient. Among soluble precursors, N-phthaloyl chitosan is particularly useful and made possible a series of regioselective and quantitative substitutions that was otherwise difficult. One of the important achievements based on this organosoluble precursor is the synthesis of nonnatural branched polysaccharides that have sugar branches at a specific site of the linear chitin or chitosan backbone [89]. 

C12-15 alkyl salicylate Canolamidopropyl betaine Canolamidopropyl ethyidimonium ethosulfate Capramide DEA Capryl hydroxyethyl imidazoline Capryloyl collagen amino acids Capryloyl hydrolyzed collagen Capryloyl hydrolyzed keratin Capryloyl keratin amino acids Caprylyl hydroxyethyl imidazoline Carboxymethyl chitin Carpronium chloride Casein Ceresin Ceteth-20 Cetethyidimonium bromide Cetethyl morpholinium ethosulfate Cetrimonium methosulfate Cetrimonium saccharinate Cetrimonium tosylate... 

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