反应详情

A solution of the alcohol (370 mg, 2.5 mmol) in dichloromethane (10 mL) was stirred at room temperature. N-Methylmorpholine-N-oxide (307 mg, 2.62 mmol) and powdered 4 Å molecular sieves (˜1 g) were added and the mixture was stirred under Ar for 30 minutes. Tetrapropylammonium perruthenate (44 mg, 0.12 mmol) was added in one portion and stirring was continued for 30 minutes. Tic indicated some starting material remaining, so further N-methylmorpholine-N-oxide (100 mg, 0.85 mmol) was added and stirring continued for an additional 30 minutes. The mixture was evaporated onto SiO2 (˜2 g) and purified by flash column chromatography (SiO2, 10% EtOH/Hexane eluent) to afford the aldehyde as a pale yellow oil (299 mg, 82%).

1. additionwere added
2. stirringstirring
3. waitwas continued for 30 minutes
4. stirringstirring
5. waitcontinued for an additional 30 minutes
6. customThe mixture was evaporated onto SiO2 (˜2 g)
7. custompurified by flash column chromatography (SiO2, 10% EtOH/Hexane eluent)