反应详情

PS-Carbodiimide (0.53 g, 123 mmol/g, Argonaut Technologies, Inc.) was added to a stirred mixture of N-[[4-[5-(3,5-dichlorophenyl)-4,5-dihydro-5-(trifluoromethyl)-3-isoxazolyl]-1-naphthalenyl]carbonyl]glycine (i.e. the product of Step D, 510 mg) and 2,2,2-trifluoroethylamine (0.072 mL) in dichloromethane (3 mL) at room temperature. The mixture was stirred at room temperature for 5 h, then filtered and concentrated under reduced pressure. The residue was purified by column chromatography to provide the title compound (99 mg), a compound of this invention, as a white solid. 1H NMR (CDCl3): δ 8.82 (d, 1H), 8.26 (d, 1H), 7.46-7.67 (m, 7H), 7.09 (m, 2H), 4.28 (d, 2H), 4.25 (d, 1H), 3.96 (m, 2H), 3.88 (d, 1H).

1. filtrationfiltered
2. concentrationconcentrated under reduced pressure
3. customThe residue was purified by column chromatography