反应详情

温度

92.5 °C

A mixture of 3,5-dimethyl-1H-pyrrole-2-carbaldehyde (1.85 g, 15 mmol), dimorpholine-methane (5 mL, 27 mL) in THF (40 mL), water (15 mL) and acetic acid (4 mL) was heated to reflux (oil bath 90-95° C.) for 6 hours. The reaction was concentrated to a volume of 20 mL, basified with Na2CO3 and extracted with ethyl acetate (3×75 mL). The combined extracts were dried, concentrated and the residue was purified on a silica gel column to give 2 g (36%) of 3,5-dimethyl-4-morpholin-4-ylmethyl-1H-pyrrole-2-carbaldehyde as a solid.

1. temperaturewas heated
2. concentrationThe reaction was concentrated to a volume of 20 mL
3. extractionextracted with ethyl acetate (3×75 mL)
4. customThe combined extracts were dried
5. concentrationconcentrated
6. customthe residue was purified on a silica gel column