A novel synthesis of 1-aryl tetrazoles promoted by employing the synergy of the combined use of DMSO and an ionic liquid as the solvent system at ambient temperature

A mild, convenient, efficient, and rapid protocol for the synthesis of 1-aryl-1H-1,2,3,4-tetrazoles via the condensation of amines, triethyl orthoformate, and sodium azide at ambient temperature in excellent isolated yields (85-90%) by the combined use of DMSO and an ionic liquid as a solvent has been reported.