反应详情

A solution of (S)-3-(2-fluoropyrimidin-4-yl)-4-isopropyloxazolidin-2-one (1055 mg, 4.68 mmol), 1-(5-(4-fluoro-3-methylphenyl)pyrimidin-2-yl)ethanamine (1300 mg, 5.62 mmol, 1.2 equiv) and diisopropylethylamine (908 mg, 7.03 mmol, 1.5 equiv) in DMSO (20 mL) was heated at 110° C. for 1 h. The reaction mixture was poured into water (60 mL) and extracted with EtOAc (2×50 mL). Combined organics were washed with water (40 mL), brine (40 mL), dried over Na2SO4, filtered and concentrated directly onto silica gel. Silica gel chromatography provided the mixed distereomers of (S)-3-(2-(1-(5-(4-fluoro-3-methylphenyl)pyrimidin-2-yl)ethylamino) pyrimidin-4-yl)-4-isopropyloxazolidin-2-one (560 mg). Chiral separation was carried out with SFC (ID, 5 μm, 20×250 mm) using 35% MeOH in CO2 to give (S)-3-(2-((S)-1-(5-(4-fluoro-3-methylphenyl)pyrimidin-2-yl)ethylamino)pyrimidin-4-yl)-4-isopropyloxazolidin-2-one and (S)-3-(2-((R)-1-(5-(4-fluoro-3-methylphenyl)pyrimidin-2-yl)ethylamino)pyrimidin-4-yl)-4-isopropyloxazolidin-2-one.

1. extractionextracted with EtOAc (2×50 mL)
2. washCombined organics were washed with water (40 mL), brine (40 mL)
3. dry with materialdried over Na2SO4
4. filtrationfiltered
5. concentrationconcentrated directly onto silica gel