Silica Functionalized Cu(I) as a Green and Recyclable Heterogeneous Catalyst for the Huisgen 1,3-Dipolar Cycloaddition in Water at Room Temperature

Bis-triphenylphosphano complexes of copper(I)-carboxylates serve as efficient catalysts for azide-alkyne cycloaddition. The triazole formation takes place straightforwardly at ambient temperature providing a wide variety of products with good yields in the presence of 0.005-0.05% catalyst.