反应详情

4-(2-Tetrahydro-3-H-pyranoxy)phenylmagnesium bromide (6.7 mmol) in THF (0.5 M) was added dropwise to a solution of oxazole-2-carbaldehyde (5.15 mmol) in THF (8 mL). After it was stirred at room temperature for 2.5 hours, the reaction was quenched with water and extracted with EtOAc (200 mL). The organic phase was washed with brine, dried over anhydrous sodium sulfate, filtered, and concentrated under reduced pressure. The residue was column chromatographed (silica gel, 1:2 EtOAc/hexane). Compound M11.1 was obtained. MS ESI (pos.) m/e:276 (M+H). 1H NMR (400 MHz) (DMSO-d6) δ 8.02 (s, 1H); 7.31 (d, J=8.7 Hz, 2H); 7.14 (s, 1H); 6.97-7.01 (m, 2H); 6.27 (d, J=5 Hz, 1H); 5.74 (d, J=5 Hz, 1H); 5.44 (s, 1H); 3.74 (m, 1H); 3.52 (M, 1H); 1.72-1.81 (m, 3H); 1.52-1.60(m, 4H).

1. customthe reaction was quenched with water
2. extractionextracted with EtOAc (200 mL)
3. washThe organic phase was washed with brine
4. dry with materialdried over anhydrous sodium sulfate
5. filtrationfiltered
6. concentrationconcentrated under reduced pressure
7. customchromatographed (silica gel, 1:2 EtOAc/hexane)
8. customCompound M11.1 was obtained