Benzoic acid, 4-hydroxy-3-nitro-, methyl ester → Methyl 3-amino-4-hydroxybenzoate

참여 물질

반응 단계

A stirred mixture of methyl 4-hydroxy-3-nitrobenzoate (3.22 g, 0.0163 mol) and 5% Pd—C (12.9 g) in MeOH (30mL) was hydrogenated under an atmospheric pressure for 70 hr at room temp. Insoluble catalyst was removed, and the filtrate was evaporated in vacuo. The residue was chromatographed on silica-gel with EtOH—CHCl3 (1:20, v/v) as eluent to afford 1.89 g (69%) methyl 3-amino-4-hydroxybenzoate as a pale brown syrup.

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