M-Phenylenediamine → HCID 86640288, Verbindung

Temperatur

70 °C

To a solution of benzene-1,3-diamine (4.48 g, 41.4 mmol) in anhydrous tetrahydrofuran (3 ml) under an atmosphere of nitrogen was added 2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-benzoyl chloride (4.40 g, 13.8 mmol) (Example I4) dissolved in anhydrous tetrahydrofuran (3 ml). The reaction mixture was stirred at 70° C. for 48 hours. Then the reaction mixture was diluted with ethyl acetate and aqueous sodium hydrogen carbonate (saturated). The phases were separated and the aqueous phase was extracted twice with ethyl acetate. The combined organic phases were dried over sodium sulfate and concentrated. The residue was purified by column chromatography on silica gel (eluent: cyclohexane/ethyl acetate 3:1) to give N-(3-amino-phenyl)-2,6-dimethyl-4-(1,2,2,2-tetrafluoro-1-trifluoromethyl-ethyl)-benzamide (3.4 mg, 61% yield). 1H-NMR (CDCl3, 400 MHz): 7.34 (t, 1H), 7.30 (s, 2H), 7.15 (t, 1H), 6.75 (d, 2H), 6.52 (d, 2H), 2.46 (s, 6H) ppm.

1. customThe phases were separated
2. extractionthe aqueous phase was extracted twice with ethyl acetate
3. dry with materialThe combined organic phases were dried over sodium sulfate
4. concentrationconcentrated
5. customThe residue was purified by column chromatography on silica gel (eluent: cyclohexane/ethyl acetate 3:1)

ORD-Eintrag

ord-757506abfe284d2e807f65eb642ea53a

Quelldatensatz

uspto-grants-2013_06

DOI

10.6084/m9.figshare.5104873.v1

Patentnummer

US08466180B2