146-21-4Relevant articles and documents
Preparation and electrochemical behavior of N-substituted phenothiazine oxide
Hayashi, Hideki,Koizumi, Take-Aki
, p. 1441 - 1449 (2016)
The chemical properties of promazine oxide (Prom-O) and promazine (Prom) were compared. Cyclic voltammetry (CV) experiments showed a higher oxidation potential of Prom-O compared to that of Prom. The results of CV measurements also suggested the potential applicability of Prom-O as an n-type semiconductor.
Formation of a promazine radical and promazine 5-oxide in the reaction of promazine with hydrogen peroxide: Mechanistic insight from kinetic and epr measurements
Wisniewska, Joanna,Wrzeszcz., Grzegorz,Koter, Stanislaw
, p. 1 - 9 (2010)
The kinetics of the oxidation of promazine (PMZ) by hydrogen peroxide was studied in the presence of a large excess of H2O2 in acidic chloride media using UV-vis spectroscopy. The reaction proceeds via two consecutive steps. In the first step, oxidation leads to formation of a promazine radical. In the second step, the promazine radical is oxidized to promazine 5- oxide. Electron paramagnetic resonance spectroscopy (EPR) results provide clear evidence for the formation of an intermediate promazine radical. Linear dependences of the pseudo-first- order rate constants (k1 and k2)on[H2O2] with a nonzero intercept were established for the first and the second process, respectively. The rate of the first stage of the reaction increased slightly with increasing concentration of O2, indicating the role of the OH? radicals on the redox process, which are transformed into the Cl2-? radicals. The mechanism of the overall reaction is discussed on the basis of all these kinetic measurements.
Copper(II)-catalyzed promazine oxidation by dioxygen in acidic aqueous solutions
Wisniewska,Kita
, p. 491 - 495 (2007/10/03)
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