Aluminium lithium hydride → Benzyl 3-formylpiperidine-1-carboxylate
反応式
[H-].[Al+3].[Li+].[H-].[H-].[H-].CON(C)[C:10]([CH:12]1[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][CH2:21][C:22]2[CH:27]=[CH:26][CH:25]=[CH:24][CH:23]=2)=[O:19])[CH2:13]1)=[O:11]>C1COCC1>[CH:10]([CH:12]1[CH2:17][CH2:16][CH2:15][N:14]([C:18]([O:20][CH2:21][C:22]2[CH:23]=[CH:24][CH:25]=[CH:26][CH:27]=2)=[O:19])[CH2:13]1)=[O:11]参加物
4
実験手順
To a cooled (−78° C.) suspension of lithium aluminum hydride (0.70 g, 18.4 mmol) in dry THF (100 mL) under an argon atmosphere was added dropwise a solution of benzyl 3-{[methoxy(methyl)amino]carbonyl}-1-piperidinecarboxylate (4.5 g, 14.7 mmol) in THF (30 mL), and the stirring was continued at −78° C. for 45 min. The reaction mixture was quenched with 0.5N KHSO4 (130 mL), and then extracted with ether. The separated organic phase was dried over MgSO4, filtered, and concentrated under reduced pressure to give benzyl 3-formyl-1-piperidinecarboxylate as a colorless oil (0.54 g, yield; 82%).