Ammonia → Trifluoroacetic acid

Participants

Reaction Steps

To a solution of (3-benzyl-4-chloro-2-methoxyquinolin-6-yl)(1-methyl-1H-imidazol-5-yl)(6-(trifluoromethyl)pyridin-3-yl)methanol (446 mg, 0.830 mmol, Example 110) and DMF (15 mL) was added NaH (60% in mineral oil, 90 mg, 2.3 mmol) at room temperature. After stirring for 15 minutes, acetic anhydride (0.16 mL, 1.7 mmol) was added. After stirring for 1 hour, NH3 (7.0 M in MeOH, 1.0 mL, 7.0 mmol) was added. The mixture was stirred overnight and concentrated in vacuo. The residue was partitioned between EtOAc and water. The organic layers were washed with water, and the aqueous layer was back extracted with EtOAc. The extracts were dried (Na2SO4), filtered, and concentrated. The residue was purified by reverse phase HPLC (water/acetonitrile/0.1% TFA) to afford the title compound as a TFA salt. 1H NMR (400 MHz, MeOH-d4) δ 8.97 (s, 1H), 8.77 (d, J=2.02 Hz, 1H), 8.11 (d, J=2.02 Hz, 1H), 8.00 (dd, J=2.27, 8.34 Hz, 1H), 7.94 (d, J=9.09 Hz, 1H), 7.88 (d, J=8.08 Hz, 1H), 7.62 (dd, J=2.27, 8.84 Hz, 1H), 7.20-7.24 (m, 4H), 7.12-7.18 (m, 1H), 6.94 (d, J=1.52 Hz, 1H), 4.30 (s, 2H), 4.08 (s, 3H), 3.72 (s, 3H); MS m/e 538.2 [M+H]+.

Provenance & Evidence