Water → 2-(2,2,2-trifluoroethoxy)-3-[4-(2,2,2-trifluoroethoxy)phenyl]-5,6-dihydropyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione

To a solution of 2,2,2-trifluoroethanol (0.472 mL) in tetrahydrofuran (20 mL) was added sodium hydride (60% in oil, 0.184 g). The reaction mixture was stirred for 5 min, 2-(methylsulfinyl)-3-[4-(2,2,2-trifluoroethoxy)phenyl]-5,6-dihydropyrido[2,3-d]pyrimidine-4,7(3H,8H)-dione (0.88 g) was added thereto, and the mixture was stirred at room temperature for 1 hr. To the reaction mixture was added water, and the mixture was extracted with ethyl acetate. The extract was washed with saturated brine, and dried over anhydrous sodium sulfate. The solvent was evaporated under reduced pressure. The residue was purified by silica gel column chromatography (ethyl acetate/hexane), and recrystallized from ethyl acetate/hexane to give the title compound (0.80 g).

1. stirringthe mixture was stirred at room temperature for 1 hr
2. extractionthe mixture was extracted with ethyl acetate
3. washThe extract was washed with saturated brine
4. dry with materialdried over anhydrous sodium sulfate
5. customThe solvent was evaporated under reduced pressure
6. customThe residue was purified by silica gel column chromatography (ethyl acetate/hexane)
7. customrecrystallized from ethyl acetate/hexane

ORD record

ord-305f36da3a80466db3403d828ed93942

Source dataset

uspto-grants-2015_05

DOI

10.6084/m9.figshare.5104873.v1

Patent number

US09023858B2