CONJUGATED 1, 3-DIYNES ARE STRUCTURAL MOIETIES OFTEN FOUND IN NATURAL PRODUCTS WITH PROMINENT BIOLOGICAL ACTIVITIES, SUCH AS ANTIBACTERIAL, ANTIMICROBIAL, ANTIFUNGAL, ANTITUMOR, ANTICANCER, ANTI-HIV, AND PESTICIDAL AGENTS. [1] THIS UNIT PLAYS AN IMPORTANT ROLE IN MOLECULAR RECOGNITION AS WELL AS IN THE DESIGN OF ADVANCED MATERIALS SUCH AS CONJUGATED POLYMERS, LIQUID CRYSTALS, MOLECULAR WIRES, OR NON-LINEAR OPTIC MATERIALS, AMONGST OTHERS. [2] COPPER NANOPARTICLES ON CHARCOAL CATALYZED OXIDATIVE HOMO-COUPLING OF TERMINAL ALKYNES AT ROOM TEMPERATURE UNDER SOLVENT-FREE CONDITIONS. THE CORRESPONDING 1, 3-DIYNES WERE OBTAINED IN GOOD TO HIGH YIELDS.