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[Formation of an azoderivative of phenothiazine]
Il Farmaco; Edizione Scientifica
|May 1, 1977
Abstract:
The reaction of phenothiazine-5-oxide in 2 N HCl with 2,4-dinitrophenylhydrazine gives rise to 3-azo-(2',4'-dinitrophenyl)phenothiazine and phenothiazine. The stoichiometric ratio is two molecules of phenothiazine-5-oxide to one molecule of 2,4-dinitrophenylhydrazine.