One‐Pot Synthesis of 5‐Substituted 1H‐Tetrazoles from Aryl Bromides with Potassium Hexakis(cyano‐κC)ferrate(4−) (K4[Fe(CN)6]) as Cyanide Source

Abstract magnified image A one‐pot procedure for the synthesis of 5‐substituted 1H‐tetrazoles through the three‐component reaction between an aryl bromide, potassium hexakis(cyano‐κC)ferrate(4−) (K4[Fe(CN)6]) and NaN3 catalyzed by [Pd(OAc)2] and ZnBr2 in the presence of 1,4‐diazabicyclo[2.2.2]octane (dabco) was developed. Furthermore, the reaction occurred under nonacidic conditions and involved a nontoxic cyanide source, making this method a quite attractive one.