反应详情

EX-608C) A THF (15 mL) solution of the aldehyde from EX-608B (0.70 g, 4.0 mmol) and 2,6-lutidine (0.46 mL, 4.0 mmol) was stirred in a hydrogen 4.0 mmol) and 2,6-lutidine (0.46 mL, 4.0 mmol) was stirred in a hydrogen temperature. The slurry was filtered through celite, and the solvent was removed. The residue was taken up in ethyl acetate and washed with 1 N HCl and brine. The organic layer was dried (MgSO4) and evaporated to give 0.50 g (70%) of the desired 3-(tetrahydro-2-furanyl)phenylmethanol product as a yellow oil. The formation of the desired product was monitored by the disappearance of the aldehyde (δ˜10) and olefin peaks in the 1H NMR disappearance of the aldehyde (δ˜10) and olefin peaks in the 1H NMR spectrum. 2.8 mmol) and MnO2 (2.10 g, 24.3 mmol) in dichloromethane (15 mL) was refluxed for 3 h. The slurry was filtered through celite, and the filtrate was evaporated to a yellow oil. Purification by flash chromatography on silica gel eluting with 10% ethyl acetate in hexane gave 0.19 g (45%) of the desired aldehyde product as a pale yellow oil. GCMS: m/z=177 [M+H]+.

1. filtrationThe slurry was filtered through celite
2. customthe solvent was removed
3. washwashed with 1 N HCl and brine
4. dry with materialThe organic layer was dried (MgSO4)
5. customevaporated