反应详情

To a solution of 2,6-bis-benzyloxybenzaldehyde (1.9 g, 6 mmol) in methylene chloride (15 mL) is added BBr3 (18 mL, 18 mmol, 1M in methylene chloride) and the mixture is stirred at RT for 18 h. Water is added to the mixture and the methylene chloride is removed under reduced pressure. The aqueous is extracted with EtOAc and the organic phase is washed with water and brine then is dried over sodium sulfate. The solvent is removed under reduced pressure and the residue is purified by flash chromatography using hexane/EtOAc (5:1) as eluent to give the title compound as a yellow solid.

1. customthe methylene chloride is removed under reduced pressure
2. extractionThe aqueous is extracted with EtOAc
3. washthe organic phase is washed with water and brine
4. dry with materialthen is dried over sodium sulfate
5. customThe solvent is removed under reduced pressure
6. customthe residue is purified by flash chromatography