Peanut shell as a green biomolecule support for anchoring Cu 2 O: a biocatalyst for green synthesis of 1,2,3-triazoles under ultrasonic irradiation

Cu O supported on peanut shell (Cu O@PS) was prepared by the reaction of copper acetate and peanut shell powder as a naturally available biopolymer support. The prepared catalyst was used as an efficient and reusable heterogeneous catalyst in the click reaction of benzyl halide or phenacyl bromides, acetylenes and sodium azide for the synthesis of potentially biologically active 1,2,3-triazoles under ultrasonic irradiation in EtOH-H O as green solvent.