Interception of a metallo-intermediate in the oxidation of a bis-hydrazone: reactions of benzil (toluene-p-sulphonyl)hydrazones with lead(IV) and mercury(II) acetates
Abstract
Oxidation of benzil bis(toluene-p-sulphonyl)-hydrazone with mercuric acetate or lead tetra-acetate gave 4,5-diphenyl-1,2,3-triazol-1-yl-toluene-p-sulphon-amide; an unstable hydrazono–mercury acetate intermediate was isolated from the oxidation and comparative evidence for a subsequent diazo intermediate is presented.