Acetic Acid → HCID 66997420, compound

Participants

Reaction Steps

(3aR,4S,6aS)-2-(6-(Trifluoromethyl)pyridin-2-yl)octahydrocyclopenta[c]pyrrol-4-amine from Example 264 Step A (44 mg, 0.162 mmol) and acetone (14.13 mg, 0.243 mmol) were combined in dichloromethane (0.5 mL). Acetic acid (0.5 mL) was added. The reaction mixture was stirred at ambient temperature for 30 minutes, then PS-cyanoborohydride (146 mg, 0.324 mmol) was added. After 18 hours, the reaction mixture was filtered and the solvent removed under a stream of nitrogen. The crude material was applied to a 4 g silica gel cartridge and purified with a gradient of 1-10% methanol in (2 N ammonia)/dichloromethane to give to give the title compound: 1H NMR (500 MHz, pyridine-d5) δ ppm 7.57-7.52 (m, 1H), 6.99 (d, J=7.2, 1H), 6.55 (d, J=8.6, 1H), 3.62-3.54 (m, 1H), 3.54-3.45 (m, 2H), 3.25 (dd, J=10.7, 4.3, 1H), 3.03 (dd, J=11.8, 5.9, 1H), 2.83 (dt, J=12.4, 6.2, 1H), 2.76-2.67 (m, 1H), 2.49-2.41 (m, 1H), 2.02-1.92 (m, 2H), 1.45-1.29 (m, 3H), 1.06 (d, J=6.2, 3H), 1.03 (d, J=6.2, 3H); MS (ESI+) m/z 314 (M+H)+.

Provenance & Evidence