反应详情

α-(2′-Hydroxybenzylidene)-γ-butyrolactone (5.0 g) was dissolved in ethanol (400 ml) and 10% palladium carbon (0.5 g) was added. The reaction mixture was reduced for 6 hr at 50 atm. The reaction mixture was filtered and the organic solvent was concentrated to give the title compound (5.0 g).

1. filtrationThe reaction mixture was filtered
2. concentrationthe organic solvent was concentrated