Water → HCID 25254808, compound

Participants

Reaction Steps

3-(4-(4-Methoxyphenoxy)phenyl)-5-(4-fluorophenyl)-1,2,4-oxadiazole (150 mg, 0.414 mmol) was suspended in dry methylene chloride (10.0 mL) and the mixture was placed under nitrogen and cooled to −80 C. Boron tribromide (1.0 M in CH2Cl2, 2.07 mmol) was added dropwise over 10 minutes. The mixture was allowed to warm to room temperature and stirred for 19 hours 30 minutes. The reaction mixture was then cooled to −80 C and H2O (2.0 mL) was added dropwise. The organic layer was removed under reduced pressure and the compound was purified by column chromatography (Hex/EtOAc 2:1) to give a white powder (144 mg, 100%). 1H NMR (500 MHz, DMSO-d6) δ(ppm): 6.83 (2H, d, J=8.8 Hz), 6.98 (2H, d, J=8.8 Hz), 7.04 (2H, t, J=8.8 Hz), 7.49 (2H, t, J=8.8 Hz), 8.03 (2H, d, J=9.0 Hz), 8.23 (2H, dd, J=8.8, 5.4 Hz), 9.49 (1H, s). 13C NMR (125 MHz, DMSO-d6) δ(ppm): 116.5 (CH), 116.9 (CH, d, J=22.5 Hz), 116.9 (CH), 119.7, 121.6 (CH, d, J=3.8 Hz), 121.7 (CH), 129.1, 130.8 (CH, d, J=10.0 Hz), 146.6, 154.5, 161.3, 164.9 (C, d, J=251.2 Hz), 167.8, 174.4. 19F (282 MHz, DMSO-d6) δ(ppm): −105.1-−105.2 (1F, m). MS (FAB+): 348 (MH+). HRMS for C20H13FN2O3 (MH+): calculated: 348.0910; found 348.0897.

Provenance & Evidence