反应详情

1.83 g (15 mmole) 4-hydroxybenzaldehyde was dissolved in 35 ml dichloromethane under argon atmosphere. 1.5 g (7.5 mmole) 2-[4-(methylsulfonyl)phenyl]-1-ethanol was added followed by 3.93 g (15 mmole) triphenylphosphine and 3.78 g (15 mmole) 1,1-(azodicarbonyl)dipiperidine. The reaction mixture was stirred at room temperature and after 2 hours a precipitate is observed. The reaction was disrupted after 5 hours and the reaction mixture was filtered. The filtrate was purified by chromatography on silica gel using dichloromethane:methanol (98:2) as eluent giving 1.66 g (yield 54.5%) of 4-[2-(4-formylphenoxy)ethyl]phenyl methyl sulfone.

1. waitThe reaction was disrupted after 5 hours
2. filtrationthe reaction mixture was filtered
3. customThe filtrate was purified by chromatography on silica gel