Syntheses of 5-Substituted 1H-tetrazoles Catalyzed by Reusable Cu(II)-NaY Zeolite from Nitriles

Abstract

Cu(II)-NaY heterogeneous catalyst is used for the synthesis of 5-substituted 1H-tetrazoles by [2+3]-cycloaddition of sodium azide and nitriles. The salient features of this process are low reaction times, mild reaction conditions and high yields. The catalyst is recovered and reused for several cycles with consistent activity.