A new catalytic system based on copper(I)-doped Wyoming's montmorillonite was elaborated. This System Was studied and Was found to catalyze the formation of 1,4-disubstituted 1,2,3-triazoles when starting from azides and alkynes. It was Used for the synthesis of a few triazole derivatives to show its usefulness. (C) 2008 Elsevier Ltd. All rights reserved.