反应详情

To a solution of 4-(hydroxymethyl)-1-methyl-2,6,7-trioxabicyclo[2.2.2]octane (10.0 g, 0.062 mol) in 200 mL of acetone is added Jones reagent (chromium trioxide and sulfuric acid) until an orange color persisted. The excess oxidant is removed by the addition of 2-propanol until a green color is obtained and the solvents are evaporated under reduced pressure. The residue is partitioned between dichloromethane (100 mL) and water (50 mL) and the layers are separated. The organic layer is washed with water, dried over anhydrous sodium sulfate and evaporated under reduced pressure to give 4-carboxy-1-methyl-2,6,7-trioxabicyclo[2.2.2]octane.

1. customThe excess oxidant is removed by the addition of 2-propanol until a green color
2. customis obtained
3. customthe solvents are evaporated under reduced pressure
4. customThe residue is partitioned between dichloromethane (100 mL) and water (50 mL)
5. customthe layers are separated
6. washThe organic layer is washed with water
7. dry with materialdried over anhydrous sodium sulfate
8. customevaporated under reduced pressure