反应详情

温度

90 °C

According to Scheme 3 Method A: To a solution of 1-(4-chlorobenzyl)-5-bromopyridin-2(1H)-one (1 eq, 0.33 mmol, 0.10 g) in dioxane/saturated aqueous NaHCO3 (1:1, 6 mL) was added Pd(PPh3)4 (0.15 eq, 0.05 mmol, 58 mg) and 4-(3-hydroxypropyl)phenylboronic acid (1.5 eq, 0.50 mmol, 90.0 mg). The reaction was then stirred at 90° C. for 4.5 hours. The reaction was allowed to cool and diluted with AcOEt. The reaction washed with saturated NH4Cl solution, brine and the organic phase extracted (×3). The combined organic fractions were dried (Na2SO4), filtered and concentrated under reduced pressure. The crude product was purified by flash chromatography over silica gel (AIT Flashsmart prepacked column 15 g SiO2) using pure AcOEt as the eluent to afford 1-(4-chlorobenzyl)-5-(4-(3-hydroxypropyl)phenyl)pyridin-2(1H)-one (0.22 mmol, 78 mg, 66%) as a white solid. M.p.: 165° C.; Rf=0.05 (CH2Cl2/AcOEt 80/20); LC (XTerra RP18, 3.5 μm, 3.0×50 mm Column): RT=3.78 min; MS m/z (CI) [MH]+=354, 356; 1H NMR (300 MHz, DMSO-d6) δ 1.64-1.77 (m, 2H), 2.61 (t, J=7.3 Hz, 2H), 3.32-3.46 (m, 2H), 4.48 (t, J=5.1 Hz, 1H), 5.15 (s, 2H), 6.52 (d, J=9.5 Hz, 1H), 7.24 (d, J=8.1 Hz, 2H), 7.35-7.44 (4H), 7.47 (d, J=8.1 Hz, 2H), 7.83 (dd, J=2.6 Hz, 9.5 Hz, 1H), 8.23 (d, J=2.6 Hz, 1H).

1. temperatureto cool
2. washThe reaction washed with saturated NH4Cl solution, brine
3. extractionthe organic phase extracted (×3)
4. dry with materialThe combined organic fractions were dried (Na2SO4)
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customThe crude product was purified by flash chromatography over silica gel (AIT Flashsmart prepacked column 15 g SiO2)