Abstract

The effective and straightforward procedure for synthesizing 1-H 1,2,3,4 tetrazole involves the reaction of a primary amine, triethyl orthoformate and sodium azide in the presence of silica-supported melamine tri sulfonic acid. One pot synthesis of tetrazole derivatives over the silica-supported melamine tri sulfonic acid catalyst reveals that the existence of strong acid sites in silica makes it more efficient with respect to the shortening of the reaction time (5–6 h) and excellent yield (75-84%) as compared to the other catalysts. This process includes benefits like a more environmentally friendly path, an easier work-up, a reusable catalyst and a high yield.

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