A new paradigm of copper oxide nanoparticles catalyzed reactions: synthesis of 1,2,3-triazoles through oxidative azide-olefin cycloaddition

Heterogeneous CuO nanoparticle catalyzed oxidative [3 + 2] cycloaddition of organic azides with a variety of activated olefins is described. A diverse array of 1,4-disubstituted and 1,4,5-trisubstituted 1,2,3-triazoles have been achieved in moderate to excellent yields.