反应详情

Benzo[de]isochromene-1,3-dione (30 g, 0.15 mol) in anhydrous THF (300 mL) was added dropwise to a solution of LAH (10 g, 0.38 mol) in anhydrous THF (200 mL). The result reaction mixture was refluxed for 3 h, then allowed to cool and stand overnight at room temperature. Water and 10% aq. NaOH was added dropwise, filtered. The filtrate was concentrated in vacuum to give the crude product, which was used directly without purification (1.15 g, crude). 1H-NMR (CDCl3): 5.06 (m, 4H), 5.23 (m, 2H), 7.42 (m, 2H), 7.60 (m, 2H), 7.82 (m, 2H).

1. customThe result reaction mixture
2. temperaturewas refluxed for 3 h
3. temperatureto cool
4. filtrationfiltered
5. concentrationThe filtrate was concentrated in vacuum