反应详情

Methyl 5-nitropyridine-2-carboxylate (182 g, 1 mol) was refluxed in piperidine (250 mL) for 1 hour. The reaction mixture was concentrated in vacuo to give crude 5-nitro-2-(piperidin-1-ylcarbonyl)pyridine, which was used for the next stage without additional purification.

1. concentrationThe reaction mixture was concentrated in vacuo