No abstract

The possibility of electrooxidative one-stage (one-pot) and two-stage conversion of N-alkylated aminopyrazoles to azopyrazoles involving electrogenerated NaOCl as the mediator has been studied for the first time. It has been found that the process involving NaOCl generation at the 1 st stage and its reaction with an aminoazole at the 2 nd stage occurs much more efficiently. If the starting aminopyrazole has no substituent at ring position 4 (1-methyl-3-amino-1H-pyrazole), the process results in the generation of azo-and 4,4'-dichloroazopyrazoles. It has been shown with 3-amino-1,4-dimethyl-1H-pyrazole as an example that under similar conditions, 4-substituted aminopyrazoles selectively give the corresponding azo derivatives.

No abstract

Nickel oxyhydroxide anode is effective green tools for the electrooxidation of aminofurazans to azofurazans inca. 1% aqueous NaOH at 20 °C. The reaction is simple and convenient, eliminating the use of expensive and toxic organic or inorganic oxidants.