Azides oligomerization reactions

The aza-Wittig reaction is also used to form polymers with pendant carbodiimide groups. For example, reaction of the polymeric azide 31 with benzyl isothiocyanate and triphenylphosphine gives the corresponding carbodiimide 32, a precursor for oligomeric guanidines." ... 

Scheme 12), -thiocyanate [66,118,119] or -azide solution [118]. Pc M is simultaneously reduced and oligomerized under the reaction conditions [123]. 

Sequential click strategies were utihzed by Zhang, Cheng, and coworkers to precisely construct new surfactants based on polyhedral oligomeric silsesquiox-ane (POSS), tethering cychc polymers [109]. The general synthetic approach involves different types of click chemistries sequentially performed strain-promoted azide-alkyne cycloaddition (SPAAC), CuAAC for POSS—polymer conjugation, and thiol-ene reactions for POSS surface functionalization. 

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