SYNTHESIS OF 10-(N'-PHENYL)IMIDOYL DERIVATIVES OF PHENOTHIAZINE, AND THEIR REACTIONS WITH O,O-DIALKYLTHIO- AND DITHIOPHOSPHATES

Article abstract of DOI:10.1007/BF01168094

Condensation of phenothiazine with phenyl isocyanide dichloride has given 10-(N'-phenylchloroformimidoyl)phenothiazine, exchange reactions of which with salts of dialkylthio- and dithiophosphoric acids result in rearrangement of the initially formed 10-phenothiazines to 10-thiocarbamoyl>phenothiazines, while reaction with diisopropyl dithiophosphoric acid affords diisopropyl chlorothiophosphate, phenyl isothiocyanate, and phenothiazine. 10-(N'-Phenylethoxyformimidoyl)phenothiazine alkylates dithiophosphoric acid to give 10-(N'-phenylcarbamoyl)phenothiazine, while N2-phenyl-N1,N1-diethyl-(10-phenothiazinyl)formamidine reacts with diisopropyl dithiophosphoric acid, affording the salt N²-phenyl-N¹,N¹-diethyl-(10-phenothiazinyl)formamidinium O,O-diisopropyl dithiophosphate.