Water → HCID 57489433, compound

Participants

Reaction Steps

To a solution of the 5-(3,5-dichlorophenyl)-3-(4-(3-fluoroazetidin-3-yl)phenyl)-5-(trifluoromethyl)-4,5-dihydroisoxazole (Preparation 15, 65 mg) in 2 mL CH2Cl2 was added triethyl amine (50 μL) followed by cyclopropane carbonyl chloride (19 mg). The reaction was allowed to stir at room temperature for 30 minutes. Water (5 mL) was added. The reaction was diluted with an additional 5 mL of CH2Cl2, stirred for 5 minutes at room temp then passed through a phase separation tube. The CH2Cl2 layer was collected and condensed. The crude material was adsorbed on silica and chromatographed on a 12 g silica column, eluting with a gradient of 0% to 100% ethyl acetate in heptane. Fractions containing the desired material were combined and concentrated. Et2O (˜½ mL) was added to the resulting film. Placing the flask on high vacuum overnight resulted in formation of a white foam. Yield 67 mg (98%) of the desired product. 1H NMR (CDCl3) δ ppm 7.76 (d, 2H), 7.63-7.51 (s, 4H), 7.45 (s, 1H), 4.8-4.7 (m, 1H), 4.6-4.3 (m, 3H), 4.12 (d, 1H), 3.74 (d, 1H), 1.6-1.4 (m, 1H), 1.07 (m, 2H), 0.86 (m, 2H). LC/MS retention time=3.654 minutes, MS calculated for (C23H18Cl2F4N2O2), 500.07; found 501.0 M+H.

Provenance & Evidence