反应详情

A suspension of methyl 3-(methylamino)-4-nitrobenzoate (Bionet) (0.5 g, 2.4 mmol) and Pd/C (Aldrich, 10%, 0.1 g) in ethyl acetate (7 mL) was vigorously shaken in a Parr under atmosphere of H2 (50 psi) for 0.5 h. The mixture was filtered through a short pad of celite. The filtrate was concentrated to give 4-amino-3-methylamino-benzoic acid methyl ester as a dark brown foam (0.4 g, 93%).

1. filtrationThe mixture was filtered through a short pad of celite
2. concentrationThe filtrate was concentrated