反应详情

A mixture of 4-(4-[1,3]dioxolan-2-yl-phenyl)-morpholine (690 mg, 2.933 mmol) in methanol (5 mL) was treated with 10 drops concentrated aqueous hydrochloric acid. The mixture was stirred at room temperature for 1 hour. To this solution was added 5 drops of water and stirring was continued for 2 hours at ambient temperature. The solution was then poured into ethyl acetate (50 mL) and washed with saturated aqueous sodium bicarbonate (2×50 mL) and extracted with ethyl acetate (2×50 mL). The combined organic extracts were dried over sodium sulfate, filtered and concentrated to give 4-morpholin-4-yl-benzaldehyde as a tan waxy solid (550 mg, 98%).

1. stirringstirring
2. waitwas continued for 2 hours at ambient temperature
3. washwashed with saturated aqueous sodium bicarbonate (2×50 mL)
4. extractionextracted with ethyl acetate (2×50 mL)
5. dry with materialThe combined organic extracts were dried over sodium sulfate
6. filtrationfiltered
7. concentrationconcentrated