Diisopropylethylamine → HCID 70872615, compound

Participants

Reaction Steps

A stirred solution of methyl 5-bromo-2-methyl-3-[(oxan-4-yl)(2,2,2-trifluoroethyl)amino]benzoate (250 mg, 0.63 mmol) in dry DMF (3.0 ml) at 0° C. under a balloon of nitrogen, was treated with HATU (288 mg, 0.76 mmol) and DIPEA (220 μl, 1.3 mmol) dropwise. The resulting solution was stirred for 5 minutes and then treated with 3-(aminomethyl)-4,6-dimethyl-1,2-dihydropyridin-2-one (89%, 119 mg, 0.69 mmol). The resulting suspension was stirred at 0° C. for 20 minutes and then stirred at room temperature for 16.5 hours. The reaction mixture was treated with 3-(aminomethyl)-4,6-dimethyl-1,2-dihydropyridin-2-one (30 mg). Stirring was continued for further 23 hours and the reaction mixture was then partitioned between water (30 ml) and CH2Cl2 (20 ml). The layers were separated and the aqueous phase was extracted with CH2Cl2 (3×20 ml). The combined organics were washed with a saturated solution of NaHCO3 (aq) (50 ml), water (60 ml), brine (2×40 ml), dried over MgSO4, filtered and concentrated in-vacuo. The crude residue was purified by flash column chromatography (10 g SNAP cartridge, Isolera, 0-10% MeOH/CH2Cl2) and triturated from ether (10 ml) with sonication. The resulting precipitate was collected by filtration and dried in-vacuo to give the title compound (249 mg, 74%) as a white solid. LC-MS100%, 4.08 min (7 minute LC-MS method), m/z=530.0, 531.0, 532.0, 533.0; 1H NMR (500 MHz, Acetone) δ 10.67 (s, 1H), 7.55 (d, J=1.8 Hz, 2H), 7.27 (d, J=1.9 Hz, 1H), 5.90 (s, 1H), 4.40 (d, J=5.5 Hz, 2H), 3.90 (dd, J=11.2, 4.6 Hz, 4H), 3.28 (t, J=11.6 Hz, 2H), 3.07-2.97 (m, 1H), 2.32 (s, 3H), 2.29 (s, 3H), 2.24 (s, 3H), 1.76 (dd, J=12.3, 1.6 Hz, 2H), 1.61 (qd, J=12.0, 4.5 Hz, 2H).

Provenance & Evidence