Acetonitrile → 1-[(4-[5-[3-Chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-(trifluoromethyl)phenyl)carbonyl]-3-(3,3,3-trifluoropropyl)imidazolidin-4-one

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반응 단계

Into a 50-mL round-bottom flask, was placed a solution of 1-[(4-[5-[3-chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-(trifluoromethyl)phenyl)carbonyl]imidazolidin-4-one (80 mg, 0.14 mmol, 1.00 equiv) in N,N-dimethylformamide (5 ml), sodium hydride (11 mg, 0.28 mmol, 2.00 equiv, 60%), 1,1,1-trifluoro-3-iodopropane (153 mg, 0.68 mmol, 5.00 equiv). The resulting solution was stirred overnight at r t. The reaction was then quenched by the addition of 10 mL of water. The resulting solution was extracted with 2×10 mL of ethyl acetate and the organic layers combined. The resulting mixture was washed with 3×10 mL of brine. The resulting mixture was concentrated under vacuum. The residue was applied onto a silica gel column with ethyl acetate/petroleum ether (1:1). This resulted in 17.8 mg (19%) of 1-[(4-[5-[3-chloro-5-(trifluoromethyl)phenyl]-5-(trifluoromethyl)-4,5-dihydro-1,2-oxazol-3-yl]-2-(trifluoromethyl)phenyl)carbonyl]-3-(3,3,3-trifluoropropyl)imidazolidin-4-one as a light yellow solid. (ES, m/z): [M+CH3CN]+ 711.0; 1H NMR (300 MHz, CD3OD): δ8.12-8.22 (m, 2H), 7.99 (s, 1H), 7.89 (d, J=5.4 Hz, 2H), 7.71 (d, J=5.1 Hz, 1H), 5.12 (s, 1H), 4.70 (s, 1H), 4.16-4.47 (m, 3H), 3.86 (s, 1H), 3.57-3.74 (m, 2H), 2.39-2.67 (m, 2H).

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