反应详情

温度

135 °C

A mixture of 6-(N-(4-bromo-3-chlorophenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide (327 mg, 0.552 mmol), allyl alcohol (0.475 mL, 6.9 mmol), palladium(II) acetate (29 mg, 0.132 mmol), 1,3-bis(diphenylphosphino)propane (108 mg, 0.26 mmol) and triethylamine (0.7 mL, 4.9 mmol) in DMSO (2 mL) and 1-butyl-3-methylimidazolium tetrafluoroborate (2 mL) was heated at 135° C. in a sealed tube for 59 hours. The reaction mixture was diluted with ethyl acetate and filtered through Celite. The filtrate was washed with water and brine, dried over sodium sulfate and concentrated. Chromatography on silica gel (hexane: ethyl acetate) gave 75 mg (24%) of 6-(N-(3-chloro-4-(3-hydroxyprop-1-en-2-yl)phenyl)methylsulfonamido)-5-cyclopropyl-2-(4-fluorophenyl)-N-methylbenzofuran-3-carboxamide. 1H NMR (400 MHz, chloroform-d) δ ppm 7.84-7.97 (m, 2H) 7.60 (s, 1H) 7.48 (s, 1H) 7.37-7.41 (m, 1H) 7.29-7.32 (m, 1H) 7.28 (s, 1H) 7.16-7.24 (m, 3H) 5.77-5.97 (m, 1H) 5.51-5.63 (m, 1H) 5.17 (s, 1H) 4.34-4.46 (m, 2H) 3.28 (s, 3H) 3.00 (d, J=4.88 Hz, 3H) 2.1 (m, 1H) 0.99-1.10 (m, 1H) 0.77-0.93 (m, 2H) 0.48-0.73 (m, 1H).). LCMS (m/z, ES+)=569 (M+H+).

1. filtrationfiltered through Celite
2. washThe filtrate was washed with water and brine
3. dry with materialdried over sodium sulfate
4. concentrationconcentrated