1. Chitosan is derived from the shells of crustaceans. It is only soluble in an aqueous acidic medium but not in organic solvents. When reacted with phthalic anhydride, it forms an amide. The product is no longer soluble in the aqueous medium but is now soluble in organic solvents. OH R'- HO- R" NH2 chitosan phthalic anhydride (a) Draw the product of the reaction between chitosan and phthalic anhydride. (b) Briefly explain the behavior change in solubility of the starting material and the final product.

1. Chitosan is derived from the shells of crustaceans. It is only soluble in an aqueous acidic medium but not in organic solvents. When reacted with phthalic anhydride, it forms an amide. The product is no longer soluble in the aqueous medium but is now soluble in organic solvents. OH R'- HO- R" NH2 chitosan phthalic anhydride (a) Draw the product of the reaction between chitosan and phthalic anhydride. (b) Briefly explain the behavior change in solubility of the starting material and the final product.

Organic Chemistry

9th Edition

ISBN:9781305080485

Author:John E. McMurry

Publisher:John E. McMurry

Chapter11: Reactions Of Alkyl Halides: Nucleophilic Substitutions And Eliminations

Section11.SE: Something Extra

Problem 80AP: Amines are converted into alkenes by a two-step process called Hofmann elimination. SN2 reaction of...

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