反应详情

To the mixture of aldehyde 153 (28.0 g, 142 mmol) and I2 (1.5 g) in AcOH (160 mL) was added Br2 (8.0 mL, 157 mmol) at 0° C. The mixture was warmed up to r.t. and stirred at r.t. for 15 hours. The mixture was poured into water (2.0 L) with stirring. The mixture was stirred at r.t. for 30 min. The mixture was extracted with EtOAc (1 LX2). The combined organic layer was dried over MgSO4, filtered, and concentrated in vacuo to provide the compound 154 (38 g, 98%).

1. stirringwith stirring
2. stirringThe mixture was stirred at r.t. for 30 min
3. extractionThe mixture was extracted with EtOAc (1 LX2)
4. dry with materialThe combined organic layer was dried over MgSO4
5. filtrationfiltered
6. concentrationconcentrated in vacuo