Nitrogen → (4S,5R)-3-{[6-azetidin-1-yl-3-(2-methoxy-5-nitrophenyl)pyridin-2-yl]methyl}-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one

Participants

Reaction Conditions

Reaction Steps

A solution of (4S,5R)-3-{[6-azetidin-1-yl-3-bromopyridin-2-yl]methyl}-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one (1.2 g, 2.229 mmol) and 2-(2-methoxy-5-nitrophenyl)-5,5-dimethyl-1,3,2-dioxaborinane in THF (20 mL) was degassed with N2 at 25° C. 1N K2CO3 (20 mL) was added followed by 1,1-bis(di-tert-butylphosphino)ferrocene palladium dichloride (0.073 g, 0.111 mmol) and the reaction was stirred vigorously at 25° C. under N2 for 4 h. The reaction was diluted with water (50 mL) and extracted with EtOAc (3×30 mL). The combined extracts were dried (Na2SO4) and concentrated in vacuo to afford the crude product. This was purified by flash chromatography (Biotage Horizon, 40M, Si, ˜30 mL/min, 100% hexanes for 260 mL, gradient to 40% EtOAc in hexanes over 2240 mL) to give (4S,5R)-3-{[6-azetidin-1-yl-3-(2-methoxy-5-nitrophenyl)pyridin-2-yl]methyl}-5-[3,5-bis(trifluoromethyl)phenyl]-4-methyl-1,3-oxazolidin-2-one. LCMS calc.=610.2. found=611.1 (M+H)+.

Provenance & Evidence