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Upstream product

• 34835-57-9 2-bromo benzene diazonium chloride 
• 588-64-7 benzaldehyde phenylhydrazone 
• 615-36-1 2-bromoaniline 

Downstream Products

• 113903-60-9 bis{1-(o-bromo-phenyl)-3,5-diphenyl-5-formazanyl}copper 

Relevant academic research and scientific papers

Electrochemical and spectroscopic behaviors of 1-(o-, m-, p- Cl, or Br) substituted phenyl-3, 5-diphenylformazans in dimethyl sulfoxide

1-(o-, m-, p-Cl, -Br) substituted phenyl-3, 5-diphenylformazans were synthesized. Their structures were elucidated and spectral behaviours were investigated by elemental analysis, FT-IR, UV-vis spectral data. The electrochemical properties such as number of electrons transferred (n), diffusion coefficient (D) and heterogeneous rate constant (ks) were determined and possible mechanisms were proposed using platinum and ultramicro platinum electrodes, cyclic voltammetry, linear sweep voltammetry and chronoamperometry. The oxidations were carried out at different electrochemical steps that were dependent upon the structure of formazans. The relation between their absorption properties with electrochemical properties was investigated. A suitable correlation was obtained between the absorption λmax with electrochemical properties, and between the oxidation peak potentials Eox1 with ks values of formazans.

Kinetics and Mechanism of Oxidative Cyclization of Formazans to Tetrazolium Salts by Thallium(III) Acetate

The kinetics of thallium(III) acetate oxidation of 1,3,5-triarylformazans have been investigated in acetic acid-water mixture.The reaction, which leads to tetrazolium salt as the product, follows the rate-law .The effect of substituent in the aldehyde (3-phenyl), the phenylhydrazine (l-phenyl) and the aryldiazonium (5-phenyl) moieties on the reaction rate has been studied and the corresponding Hammett rhos are -0.78, -0.85 and -0.8 respectively.A mechanism for the oxidative cyclization is proposed involving the formation of a N-thallated complex between the formazan and T1 (III) acetate which decomposes in a slow step accompanied by a ring closure between N-1 and N-5.