Phosphorus oxychloride → HCID 178492178, compound

Participants

Reaction Steps

To a solution of 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)piperidine-3-carboxylic acid (50 mg, 0.12 mmol) and 5-(4-aminophenyl)-4-methyl-4H-1,2,4-triazole-3-thiol (25 mg, 0.12 mmol) in pyridine (10 mL) was added POCl3 (0.3 mL, 3.29 mmol) at 0° C., the reaction mixture was stirred at room temperature for 8 hours, a sat. NaHCO3 solution (15 mL) was added slowly, the solvent was removed in vacuo, dichloromethane (40 mL) was added and filtrated, the filtrate was collected, concentrated and purified by a silica column chromatography (silica gel 200-300 mesh, eluting with dichloromethane:methanol=50:1) to afford 1-(7-(3,4-dimethoxyphenylamino)thiazolo[5,4-d]pyrimidin-5-yl)-N-(4-(5-mercapto-4-methyl-4H-1,2,4-triazol-3-yl)phenyl)piperidine-3-carboxamide (24.0 mg, 33.1%) as a white solid. 1H NMR (300 MHz, DMSO): δ 13.88 (s, 1H), 10.34 (s, 1H), 9.68 (s, 1H), 8.87 (s, 1H), 7.82-7.66 (m, 5H), 7.38-7.35 (m, 1H), 6.83 (brs, 1H), 4.83 (d, 1H, J=12.0 Hz), 4.68 (d, 1H, J=11.7 Hz), 3.71 (s, 3H), 3.63 (s, 3H), 3.58 (s, 3H), 3.15-3.07 (m, 1H), 3.00-2.93 (m, 1H), 2.62-2.58 (m, 1H), 2.07-2.03 (m, 1H), 1.83-1.71 (m, 2H), 1.51-1.47 (m, 1H). LC-MS: 604 [M+H]+, tR=1.50 min. HPLC: 99.39% at 214 nm, 99.39% at 254 nm, tR=5.36 min.

Provenance & Evidence