Sodium Carbonate → 2,2-Difluoro-1-((4S,5R)-4-fluoromethyl-2,2-dimethyl-5-{4-[6-(2,2,2-trifluoro-1-methylamino-ethyl)-pyridin-3-yl]-phenyl}-oxazolidin-3-yl) ethanone

Participants

Reaction Conditions

Reaction Steps

To a stirred solution of [1-(5-Bromo-pyridin-2-yl)-2,2,2-trifluoro-ethyl]-methyl-amine (0.075 g, 0.279 mmol) and 2,2-Difluoro-1-{(4S,5R)-4-fluoromethyl-2,2-dimethyl-5-[4-(4,4,5,5-tetramethyl-[1,3,2]dioxaborolan-2-yl)-phenyl]-oxazolidin-3-yl}-ethanone (0.115 g, 0.279 mmol) in toluene:ethanol:water (3:3:3 mL) is added Na2CO3 (0.073 g, 0.697 mmol) at room temperature. Resulting reaction mixture is degassed with nitrogen for 30 minutes followed by addition of Pd(PPh3)4 (0.032 g, 0.028 mmol) and heated to 80° C. for 3 h. The reaction mixture is concentrated in vacuo then is diluted with water and extracted with ethyl acetate. Organic layer is dried over sodium sulphate and evaporated in vacuum. The crude material is purified by Combi-flash eluting in 20% ethyl acetate in hexane afford the title compound (0.120 g). 1H-NMR (400 MHz, DMSO) δ: 1.52 (s, 3H), 1.60 (s, 3H), 2.25 (d, J=5.76 Hz, 3H), 3.01-3.05 (m, 1H), 4.44-4.48 (m, 1H), 4.56-4.58 (m, 0.5H), 4.67-4.72 (m, 1H), 4.81-4.88 (m, 0.5H), 4.90-5.00 (m, 1H), 5.27 (d, J=3.68 Hz, 1H), 6.65 (t, J=52.36 Hz, 1H), 7.60 (d, J=8.24 Hz, 2H), 7.98-8.00 (dd, J1=2.04 Hz, J2=8.2 Hz, 1H), 8.06 (d, J=8.24 Hz, 1H), 8.15 (d, J=8.32, 2H), 8.73 (d, J=1.8 Hz, 1H). LC-MS (m/z): [M−H]=476.0.

Provenance & Evidence