Sodium Carbonate → 3-{(S)-1-[4-(1-Cyclopropylmethyl-6-oxo-1,6-dihydro-pyridin-3-yl)-phenyl]-ethyl}-(S)-6-(2-hydroxy-2-methyl-propyl)-6-phenyl-[1,3]oxazinan-2-one

温度

100 °C

2 M aqueous Na2CO3 solution (0.84 mL) was added to a solution of (S)-6-(2-hydroxy-2-methylpropyl)-6-phenyl-3-[(S)-1-(4-(4,4,5,5-tetramethyl-1,3,2-dioxaborolan-2-yl)phenyl)ethyl]-1,3-oxazinan-2-one (0.40 g) and 5-bromo-1-cyclopropylmethyl-1H-pyridin-2-one (0.24 g) in dimethyl-formamide (4 mL). The resulting mixture was sparged with argon for 10 min, before [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II) dichloromethane complex (34 mg) was added. The mixture was heated to 100° C. and stirred at this temperature for 4 h. After cooling to ambient temperature, water was added and the resulting mixture was extracted with ethyl acetate. The combined organic extracts were washed with brine, dried (MgSO4), and concentrated. The residue was purified by chromatography on silica gel (dichloromethane/methanol 99:1->95:5) to afford the title compound that was crystallized with little ethyl acetate. Yield: 0.19 g (46% of theory); Mass spectrum (ESI+): m/z=501 [M+H]+.

1. customThe resulting mixture was sparged with argon for 10 min, before [1,1′-bis(diphenylphosphino)ferrocene]-dichloropalladium(II) dichloromethane complex (34 mg)
2. additionwas added
3. temperatureAfter cooling to ambient temperature
4. additionwater was added
5. extractionthe resulting mixture was extracted with ethyl acetate
6. washThe combined organic extracts were washed with brine
7. dry with materialdried (MgSO4)
8. concentrationconcentrated
9. customThe residue was purified by chromatography on silica gel (dichloromethane/methanol 99:1->95:5)

ORDレコード

ord-d8b9a8eb0ea44862ac9741115adeb8ae

出典データセット

uspto-grants-2012_03

DOI

10.6084/m9.figshare.5104873.v1

特許番号

US08138178B2