Synthesis of β-triazolylenones via metal-free desulfonylative alkylation of <i>N</i>-tosyl-1,2,3-triazoles

Desulfonylative alkylation of N -tosyl-1,2,3-triazoles under metal-free conditions leading to β-triazolylenones is reported here. The present study encompasses the synthesis triazoles with a new substitution pattern in single step from cyclic 1,3-dicarbonyl compounds and -tosyl triazole moderate high yields. Our takes place complete regioselectivity as confirmed by crystallographic analysis which rationalized suitable mechanistic proposal. This method provides an efficient, versatile straightforward strategy towards functionalized 1,2,3-triazoles.