Synthesis of 1,4-Disubstituted 1,2,3-Triazoles from Aromatic a-Bromoketones, Sodium Azide and Terminal Acetylenes via Cu/Cu(OTf)2-catalyzed Click Reaction under Microwave Irradiation
Green and Facile Synthesis of 1,4-Disubstituted 1,2,3-Triazoles via a Click Reaction of &#945;-Bromo Ketones, [bmim]N<sub>3</sub> and Terminal Acetylenes
An efficient and green one pot method is reported for regioselective synthesis of 1,4-disubstituted 1,2,3-
triazoles. In this method, β-ketoazides are generated via in situ reaction between α-bromo ketones and 1-butyl-3-
methylimidazolium azide [bmim]N3 in aqueous ethanol and reacted with terminal acetylenes using Cu-CuSO4 at room
temperature to afford 1,4-disubstituted 1,2,3-triazoles.