反应详情

A THF (15 mL) solution of methyl 4,5-dicyclopropyl-2-ethoxybenzoate (3.26 g) was added at 0° C. to a mixture of lithium aluminum hydride (1.09 g) and THF (65 mL), and the resultant mixture was stirred at room temperature for 1 hour in a nitrogen atmosphere. Water (1 mL), a 1 M aqueous sodium hydroxide solution (1 mL), and water (3 mL) were added in this order to the reaction mixture at 0° C., and the mixture was filtered through celite. Then, the filtrate was concentrated under reduced pressure. The obtained residue was purified by silica gel chromatography (hexane/ethyl acetate) to obtain the title compound (2.84 g).

1. filtrationthe mixture was filtered through celite
2. concentrationThen, the filtrate was concentrated under reduced pressure
3. customThe obtained residue was purified by silica gel chromatography (hexane/ethyl acetate)