反应详情

温度

50 °C

To a solution of 6-[(6-chloropyridin-3-yl)methyl]-3-[(1S,2S)-2-hydroxycyclohexyl]benzo[h]quinazolin-4(3H)-one (2.50 g, 5.95 mmol) in 30 mL of THF under an atmosphere of nitrogen was added methyl zinc chloride (2 M in THF, 5.95 mL, 11.09 mmol) and [1,1′-bis(diphenylphosphino)ferrocene]dichloropalladium(II), 1:1 complex with DCM (0.146 g, 0.179 mmol). The reaction was heated at 50° C. for 18 h, cooled to rt, and slowly treated with water. A beige solid was removed via filtration and the aqueous layer of the filtrate was extracted 2× with dichloromethane. The combined organic fractions were dried over sodium sulfate, filtered, and concentrated in vacuo. The residue was purified via silica gel chromatography, eluting with 0-5% methanol in dichloromethane, to provide 3-[(1S,2S)-2-hydroxycyclohexyl]-6-[(6-methylpyridin-3-yl)methyl]benzo[h]quinazolin-4(3H)-one that gave proton NMR spectra consistent with theory and a mass ion (ES+) of 400.0 for [M+H]+.

1. temperaturecooled to rt
2. customA beige solid was removed via filtration
3. extractionthe aqueous layer of the filtrate was extracted 2× with dichloromethane
4. dry with materialThe combined organic fractions were dried over sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated in vacuo
7. customThe residue was purified via silica gel chromatography
8. washeluting with 0-5% methanol in dichloromethane