Ethylamine → 2-(Ethylamino)-6fluoro-3-nitropyridine

Participants

Reaction Steps

To a solution of 2,6-difluoro-3-nitropyridine (45.7 g, 285 mmol) in THF (500 mL) at −40° C. was added drop-wise a solution of ethylamine (25.7 g, 570 mmol) in THF (250 mL). After 30 min, the reaction mixture was concentrated under reduced pressure and the residue was dissolved in EtOAc. The organic phase was washed with brine, dried (MgSO4), filtered and concentrated. The resulting yellow solid was purified by flash chromatography (15% EtOAc in hexane) to give the title compound (43.2 g, 82% yield) as a yellow solid.

Provenance & Evidence