反应详情

A solution of methyl 2-benzyl-3-dimethylaminopropionate (60.0 g) in ether (300 ml) is added dropwise with stirring under a nitrogen atmosphere to a suspension of lithium aluminum hydride (28.0 g) in ether (700 ml). The reaction mixture is refluxed for 4 hours, then stirred at room temperature for 18 hours. The reaction mixture is cooled to 0°, and water (30 ml) is added cautiously (dropwise initially) followed by 10% NaOH (60 ml). The solid inorganic material is filtered off, and the filtrate dried over magnesium sulfate. The solvent is removed under reduced pressure to give 2-benzyl-3-dimethylaminopropanol as an oil which is used without further purification; NMR(CDCl3): δ7.12 (m, 5H), 5.62 (broad s, 1H), 3.57 (m, 2H).

1. temperatureThe reaction mixture is refluxed for 4 hours
2. temperatureThe reaction mixture is cooled to 0°
3. filtrationThe solid inorganic material is filtered off
4. dry with materialthe filtrate dried over magnesium sulfate
5. customThe solvent is removed under reduced pressure