Azide pre-click modification of chitosan: N-(2-azidoethyl)chitosan of the reduction product with sodium
azide. The course of the formation of the Schiffbase (this step is determining
Click reactions in chitosan chemistry and biological properties. The reactions of copper-catalyzed
azide—alkyne cycloaddition and the click reactions
Synthesis of new p-tert-butylcalix[4]arene derivatives containing photopolymerizable 1,3-butadiyne fragments. The functionalization can be readily accomplished via copper-catalyzed
azide–alkyne cycloaddition under mild conditions.