One-Step Synthesis of 5-Substituted 1H-Tetrazoles from an Aldehyde by Reaction with Acetohydroxamic Acid and Sodium Azide under Bi(OTf)3 Catalysis

An efficient one-step method for the synthesis of 5-substituted 1H-tetrazoles from aldehydes by reaction with acetohydroxamic acid and sodium azide using bismuth(III) triflate as the catalyst is described.