“…Click chemistry, first introduced by the groups of Meldal [6] and Sharpless [7], describes a new concept for conducting organic reactions. Based upon the premise, organic synthesis should take advantages such as being modular, stereospecific, high-yielding and involving simple and green protocols [8]. Preparation of 1,2,3-triazoles by copper-catalysed alkyne-azide cycloaddition (CuAAC) has emerged as a prominent "Click" chemistry [9][10][11].…”