反应详情

To a solution of 1-(2-aminopyrimidin-4-yl)-6-bromo-2,3-dihydro-1H-1,3-benzodiazol-2-one (230 mg, 0.751 mmol) in EtOAc was added charcoal (5 mol %). The mixture was stirred at RT for 20 min then filtered and concentrated in vacuo. To the residue in a sealed tube was added 2-(1,3-thiazol-2-yl)but-3-yn-2-ol (230 mg, 1.50 mmol), piperidine (2 mL), tetrakis(triphenylphosphine)palladium (43.4 mg, 0.038 mmol) and copper(I) iodide (14.3 mg, 0.075 mmol). The reaction mixture was then heated at 75° C. for 18 hr then partitioned between EtOAc (15 mL) and water (2 mL). The organic layer was concentrated in vacuo and the residue purified by reverse phase preparative HPLC to afford the title compound: 1H NMR (500 MHz, DMSO) δ 1.90 (3 H, s), 6.92 (2H, s), 6.95 (1H, s), 7.04 (1H, d, J=8.04 Hz), 7.21 (1H, dd, J=8.04, 1.42 Hz), 7.40 (1H, d, J=5.52 Hz), 7.68 (1H, d, J=3.31 Hz), 7.77 (1H, d, J=3.15 Hz), 8.26-8.36 (2H, m), 11.57 (1H, br. s.); LC-MS: m/z=+379.0 (M+H)+.

1. filtrationthen filtered
2. concentrationconcentrated in vacuo
3. temperatureThe reaction mixture was then heated at 75° C. for 18 hr
4. customthen partitioned between EtOAc (15 mL) and water (2 mL)
5. concentrationThe organic layer was concentrated in vacuo
6. customthe residue purified by reverse phase preparative HPLC