1-Hydroxybenzotriazole → HCID 54596369, compound

Participants

Reaction Steps

To a stirred solution of 1-isopropyl-3-methyl-6-(pyridin-3-yl)-1H-indazole-4-carboxylic acid (0.5 g, 1.69 mmol) in DCM (30 mL) was added EDC.HCl (0.39 g, 2.03 mmol), HOBT (2.74 g, 2.03 mmol) followed by DIPEA (1.47 mL, 8.45 mmol) and stirred at room temperature for 15 min. To the resulting reaction mixture, 3-(amino methyl)-4,6-dimethylpyridin-2(1H)-one (0.257 g, 1.69 mmol) was added and stirred at room temperature for overnight. The reaction mixture was filtered and the precipitate was washed with water followed by ether and dried. The solid compound was further purified by silica gel chromatography (eluent: 10% MeOH in ethyl acetate) to afford the title compound as an off-white solid (225 mg, 31%). 1H NMR (DMSO-d6, 400 MHz): δ 1.461 (d, J=6.4 Hz, 6H), 2.109 (s, 3H), 2.240 (s, 3H), 2.438 (s, 3H), 4.372 (d, J=4.8 Hz, 2H), 5.042-5.107 (m, 1H), 5.870 (s, 1H), 7.410 (s, 1H), 7.501-7.533 (m, 1H), 8.061 (s, 1H), 8.215 (d, J=8 Hz, 1H), 8.461 (t, J=4.8 Hz, 1H), 8.593 (d, J=4.8 Hz, 1H), 9.036 (s, 1H), 11.489 (brs, 1H). LCMS (ES+) m/z: 430.12

Provenance & Evidence