Methanol → Tert-butyl 2-amino-4-(benzo[1,3]dioxol-5-yl)benzoate

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Reaction Steps

0.42 g of 10% palladium-carbon was added to a mixed solution of 14 mL of methanol and 14 mL of ethyl acetate containing 1.4 g of tert-butyl 4-(benzo[1,3]dioxol-5-yl)-2-nitrobenzoate and stirred under hydrogen atmosphere at room temperature for 2 hours. After insoluble were removed by filtration, the solvent was evaporated under reduced pressure. The obtained residue was purified with silica gel column chromatography [PSQ100B (spherical) manufactured by Fuji Silysia Chemical Ltd., eluent; hexane:ethyl acetate=20:1] to obtain 0.52 g of tert-butyl 2-amino-4-(benzo[1,3]dioxol-5-yl)benzoate as pale red solid.

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