Boron sulfuric acid as an efficient heterogeneous catalyst for the synthesis of 1-substituted 1H-1,2,3,4-tetrazoles in polyethylene glycol

Abstract

Boron sulfuric acid (BSA) was found to be an efficient heterogeneous catalyst for the synthesis of 1-substituted 1H-1,2,3,4-tetrazoles from the reaction of aryl and alkyl amines with triethyl orthoformate and sodium azide at 120 oC in polyethylenglicole(PEG).Keywords: Boron sulfuric acid (BSA), Heterogeneous catalyst, Aryl and alkyl amines, Triethylorthoformates, 1-Substituted 1H-1,2,3,4-tetrazole, Green chemistry