Cu(I)-catalyzed one-pot synthesis of 1,4-disubstituted 1,2,3-triazoles via nucleophilic displacement and 1,3-dipolar cycloaddition

摘要

An efficient method is described for the regioselective synthesis of 1,4-disubstituted 1,2,3-triazoles in high yields from a variety of Baylis-Hillman acetates and terminal alkynes with sodium azide using Cul as a catalyst,in either water or polyethylene glycol (PEG).This procedure is operationally simple and environmentally benign.Polyethylene glycol (PEG)serves as an efficient reusable solvent with higher efficiency.