Diisopropylethylamine → HCID 11671647, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 1-[3,5-bis(trifluoromethyl)phenyl]-2-({[5′-isopropyl-2′-methoxy-4-(trifluoromethyl)biphenyl-2-yl]methyl}amino)ethanol (31.9 mg, 0.0551 mmol) in CH2Cl2 (5 mL) at 0° C. was added DIPEA (67 μL, 0.386 mmol), followed by triphosgene (8.2 mg, 0.0276 mmol). The reaction was stirred at 0° C. for 30 minutes. The reaction was then poured into saturated NaHCO3 (15 mL) and the mixture was extracted with EtOAc (50 mL). The organic layer was washed with brine (15 mL), dried over Na2SO4, filtered, and concentrated. Purification of the residue by flash chromatography (20% EtOAc/hexanes) afforded 5-[3,5-bis(trifluoromethyl)phenyl]-3-{[5′-isopropyl-2′-methoxy-4-(trifluoromethyl)biphenyl-2-yl]methyl}-1,3-oxazolidin-2-one. Rf=0.32 (25% EtOAc/hexanes). LCMS=606.3 (M+1)+. 1H NMR (CD2Cl2, 500 MHz) (atropisomers present in 1:1 ratio, doubling of some peaks) δ 7.90 (s, 1H), 7.77 (s, 2H), 7.57-7.62 (m, 2H), 7.37 (d, J=8.0 Hz, 1H), 7.27 (m, 1H), 6.98 (s, 1H), 6.93 (dd, J=8.4, 3.2 Hz, 1H), 5.42-5.53 (m, 1H), 4.15-4.59 (m, 2H), 3.72 & 3.73 (2 singlets, 3H), 3.05-3.65 (m, 2H), 2.88 (m, 1H), 1.19-1.23 (m, 6H).

Provenance & Evidence