Supported copper (I) catalyst from fish bone waste: An efficient,green and reusable catalyst for the click reaction toward N‐substituted 1,2,3‐TRIAZOLES

An eco‐efficient, green, and multi‐gram procedure is presented for one‐pot multicomponent synthesis of N‐substituted 1,2,3‐triazoles by using waste fishbone powders supported CuBr (FBPs‐CuBr) as catalyst. FBPs‐CuBr is found to be an efficient heterogeneous catalyst and a series of 1,2,3‐triazoles are obtained in moderate to excellent yields in water under MW irradiation (70–98%). It can be separated conveniently by a simple filtration and reused at least seven consecutive runs with a slight drop in the product yields. Furthermore, the desired product still could be obtained in 80% yield when the scale of the reaction was increased to 40.0 mmol.