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Citation: Liu Chunyan, Ren Xinmin. THE ELECTROCHEMICAL OXIDATION OF PHENYLENEDIAMINES[J]. Chinese Journal of Applied Chemistry, ;1990, 7(3): 19-23. shu

THE ELECTROCHEMICAL OXIDATION OF PHENYLENEDIAMINES

Liu Chunyan ,
Ren Xinmin

1.
Institute of Photographic Chemistry, Academia Sinica, Beijing 100101

Received Date: 3 May 1989
Available Online: 9 October 1989

The electrochemical oxidation of phenylenediamines with a following irreversibie deami-nation reaction was studied by cyclovoltammetry. Within the pH studied, there is only one oxidation Wave for N,N-diethylphenylenediamine (1a), but two oxidation waves for N,N,N,N-tetrathlphenylenediamine(2a).In acidic media, the electrochemical oxidation of N,N-diethylaminophenol(3a) proceeds via two-electron transfer, but at higher pH two single electron transfer are involved. The rate constant of the deamination reaction k_f was deter-mined as a function of pH, the mechanism of deamination was discussed.
- substituted phenylenediamines,
- deamination,
- electrochemical oxidation
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