Methyl 4-[(2,6-dinitrophenyl)amino]-3-hydroxybutanoate → Methyl 4-[(2,6-diaminophenyl)amino]-3-hydroxybutanoate

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Reaction Steps

Under hydrogen gas atmosphere, a mixture of methyl 4-[(2,6-dinitrophenyl)amino]-3-hydroxybutanoate (Reference Example 79; 2.53 g, 8.45 mmol), 10% palladium on carbon (50% wet, 500 mg) and tetrahydrofuran (85 mL) was stirred at room temperature for 6 hr. The reaction mixture was filtered and concentrated in vacuo to give the title compound as a solid (2.00 g, 8.36 mmol, 99%).

Provenance & Evidence