反应详情

To a suspension of lithium aluminum hydride (10.6 g, 264 mmol) in THF (200 mL) is added dropwise a solution of ethyl indole-2-carboxylate (50.0 g, 256 mmol) in THF (250 mL) over 25 minutes. After 3 h, water (10.6 mL) is carefully added, followed by 15% NaOH (10.6 mL), followed by additional portion of water (31.8 mL). The resulting suspension is dried (Na2SO4) and filtered through celite. After concentration under reduced pressure, the white solid (34.0 g) is crystallized from EtOAc/hexanes to give white needles for 1H-indol-2-ylmethanol. Yield 83%. HRMS (FAB) calcd for C9H9NO+H 148.0762, found 148.0771.

1. dry with materialThe resulting suspension is dried (Na2SO4)
2. filtrationfiltered through celite
3. concentrationAfter concentration under reduced pressure
4. customthe white solid (34.0 g) is crystallized from EtOAc/hexanes