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- W2607260076 abstract "Synthesis of N-alkylphenothiazines by the rearrangement-cyclization of o-alkylaminophenyl o-nitrophenyl sulfides was studied and it was found that phenothiazines are not obtained by the so-called Smiles rearrangement with alkali hydroxide. The phenothiazines were obtained by heating to above 170° and the reaction was accelerated by the use of organic bases as a solvent, especially quinoline and aniline, and by the addition of sodium phenoxide, resulting in an increased yield. The reaction proceeded the most smoothly when the alkyl was methyl, became somewhat difficult with ethyl, and further with propyl, and the starting material was recovered in the case of N-benzyl derivative." @default.
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- W2607260076 date "1957-01-01" @default.
- W2607260076 modified "2023-10-09" @default.
- W2607260076 title "Studies on the Syntheses of Phenothiazine Derivatives. IV" @default.
- W2607260076 doi "https://doi.org/10.1248/yakushi1947.77.1_3" @default.
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