反应详情

To a solution of 6-(N-(3-chloro-4-(1-hydroxyallyl)phenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (210 mg, 0.37 mmol) in THF (7 mL) was added DIEA (0.084 mL, 0.48 mmol) and chloromethyl methyl ether (0.16 mL, 2.12 mmol). The reaction mixture was heated at 50° overnight. Another portion of DIEA (0.32 mL, 1.85 mmol) was added and heating was continued for another 5 h. The reaction mixture was cooled to rt, diluted with water and extracted with EtOAc (2×). The combined organic layers were washed with brine (1×), dried over sodium sulfate and concentrated under reduced pressure. Purification by flash chromatography (silica gel, gradient of 0 to 60% EtOAc in hexanes) afforded the title compound (175 mg, 77%) as a colorless oil. 1H NMR (400 MHz, DMSO-d6) δ ppm 8.45 (q, 1H), 8.10 (s, 1H), 7.93-8.00 (m, 2H), 7.36-7.53 (m, 5H), 7.19 (s, 1H), 5.88 (ddd, 1H), 5.38 (d, 1H), 5.18-5.30 (m, 2H), 4.66 (d, 1H), 4.53 (d, 1H), 3.38-3.46 (m, 3H), 3.23 (s, 3H), 2.83 (d, 3H), 2.08-2.17 (m, 1H), 0.92-1.06 (m, 1H), 0.75-0.91 (m, 2H), 0.39-0.51 (m, 1H). LCMS (m/z, ES+)=613 (M+H+).

1. temperatureThe reaction mixture was heated at 50° overnight
2. temperatureheating
3. extractionextracted with EtOAc (2×)
4. washThe combined organic layers were washed with brine (1×)
5. dry with materialdried over sodium sulfate
6. concentrationconcentrated under reduced pressure
7. customPurification by flash chromatography (silica gel, gradient of 0 to 60% EtOAc in hexanes)