反应详情

温度

150 °C

To a solution of [2-(2,5-dichloro-phenoxy)-5-fluoro-pyridin-3-yl]-(3,4-dihydro-2H-quinoxalin-1-yl)-methanone (25.1 mg, 0.06 mmol, 1.0 equiv; Example 147) in a 1:1 mixture of THF and water (1 mL) was added 2-methyl-3-oxo-propionic acid methyl ester (27.9 mg, 0.24 mmol, 4.0 equiv; [CAS RN 51673-64-4]), dibutyltin dichloride (1.8 mg, 0.006 mmol, 0.1 equiv; [CAS RN 683-18-1]) and phenylsilane (13.0 mg, 15 μL, 0.12 mmol, 2.0 equiv; [CAS RN 694-53-1]). The reaction mixture was heated by microwave irradiation to 150° C. for 1.5 h. Removal of the solvent mixture under reduced pressure and purification by preparative HPLC on reversed phase (Xterra® PrepMSC 18, 5 μm, 19×50 mm column equipped with a Gilson Liquid Handler 215 autosampler, two Rainin Dynamax® SD-300 pumps, a Sedex ELSD 75 lightscatter and a Dionex UVD 340S UV detector) eluting with a gradient of acetonitrile/water provided 2.2 mg (7%) of the title compound as a light yellow solid. MS (ISP): 504.0 [M+H]+.

1. customRemoval of the solvent mixture
2. customunder reduced pressure and purification by preparative HPLC on reversed phase (Xterra® PrepMSC 18, 5 μm, 19×50 mm column
3. customequipped with a Gilson Liquid Handler 215 autosampler, two Rainin Dynamax® SD-300 pumps
4. washa Sedex ELSD 75 lightscatter and a Dionex UVD 340S UV detector) eluting with a gradient of acetonitrile/water