反应详情

(4S,5R)-5-[3,5-bis(trifluoromethyl)phenyl]-3-{[5-bromo-2-(methylsulfonyl)pyrimidin-4-yl]methyl}-4-methyl-1,3-oxazolidin-2-one (1.4428 g, 2.57 mmol) from Step A, 3,3-difluoroazetidine hydrochloride (0.997 g, 7.70 mmol), triethylamine (1.788 ml, 12.83 mmol) and THF (25 mL) were heated in a 63° C. oil bath overnight. The reaction crude was purified by flash chromatography (SiO2, Isolute Flash Si; 100 g prepacked cartridge). The column was eluted by an EtOAc/hexanes mixture (0% to 40%). Related fractions were pooled and evaporated to afford a light yellow solid foam as the titled compound. LCMS calc.=574.03. found=575.09 (M+H)+.

1. customThe reaction crude
2. customwas purified by flash chromatography (SiO2, Isolute Flash Si; 100 g prepacked cartridge)
3. washThe column was eluted by an EtOAc/hexanes mixture (0% to 40%)
4. customevaporated