Hydrochloric Acid → 7-methoxy-2-(2,2,2-trifluoroethoxy)-3-[4-(2,2,2-trifluoroethoxy)phenyl]pyrido[2,3-d]pyrimidin-4(3H)-one

7-Methoxy-2-(propylsulfanyl)-3-[4-(2,2,2-trifluoroethoxy)phenyl]pyrido[2,3-d]pyrimidin-4(3H)-one (350 mg) and 2,2,2-trifluoroethanol (592 μl) were dissolved in tetrahydrofuran (3 ml), and sodium hydride (60% in oil, 165 mg) was added thereto at room temperature. The reaction mixture was heated under reflux for 3 days, and allowed to be cooled to room temperature, and poured into 0.5M hydrochloric acid (10 ml). The mixture was extracted with ethyl acetate, and the extract was washed with saturated brine, dried over anhydrous magnesium sulfate, and concentrated under reduced pressure. The obtained white solid was purified by silica gel column chromatography (ethyl acetate/hexane) and then (NH, ethyl acetate/hexane) to give the white title compound (63 mg).

1. customat room temperature
2. temperatureThe reaction mixture was heated
3. temperatureunder reflux for 3 days
4. extractionThe mixture was extracted with ethyl acetate
5. washthe extract was washed with saturated brine
6. dry with materialdried over anhydrous magnesium sulfate
7. concentrationconcentrated under reduced pressure
8. customThe obtained white solid was purified by silica gel column chromatography (ethyl acetate/hexane)

ORD record

ord-02bc08701e3a45629d5d0519a2c77193

Source dataset

uspto-grants-2015_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09023858B2