2-Chloro-3-nitropyridine

59290-85-6

5470-18-8

General procedure for the synthesis of 2-chloro-3-nitropyridine from 3-nitropyridine-2-carboxylic acid: accurately weigh 3-nitropyridine-2-carboxylic acid (50.4 mg, 0.3 mmol), sodium carbonate (64.0 mg, 0.6 mmol), sodium chloride (17.6 mg, 0.3 mmol) and tert-butyl hypochlorite (32 μL, 0.3 mmol) in a 25 mL Schlenk reaction flask. Subsequently, dichloromethane (3 mL) was added as a solvent and the reaction mixture was placed in an oil bath at 25 °C for 20 hours. After completion of the reaction, the solvent was removed by distillation under reduced pressure. The crude product was purified by silica gel column chromatography using petroleum ether/ethyl acetate as eluent to give 2-chloro-3-nitropyridine in 58% yield.