摘要:
The oxidation of 2,2-Diacyl-1-arylhydrazines 1a-l with the system Pb(OAc)(4)-CF3COOH-CH2Cl2 led to the formation of two types of radical products. Phenazinium cation radicals 5a-h were formed from 2,2-diacyl-1-arylhydrazines 1a-h, while hydrazyl radicals 2i-l were observed to be the only radical products of the oxidation of 1i-l. The generated radicals are characterized by their EPR parameters.