Methyl 2-amino-6-morpholino-3-nitroisonicotinate → Methyl 2,3-diamino-6-morpholinoisonicotinate

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Reaction Steps

A mixture of methyl 2-amino-6-morpholino-3-nitroisonicotinate (4.8 g, 17 mmol) and 10% Pd/C (480 mg) in MeOH (100 mL) and CH3COOH (50 mL) was stirred at room temperature for 16 h with connection to a balloon of H2. LCMS showed no methyl 2-amino-6-morpholino-3-nitroisonicotinate left and the desired product formed. It was then filtered and the filtrate was concentrated in vacuo. The residue (4.3 g) was used for next step without purification. LC/MS: MS (ES+) m/e 253 (MH+).

Provenance & Evidence