Hydrochloric Acid → 3-(1-(2,6-Dichloro-3-fluorophenyl)ethoxy)pyridin-2-amine

Participants

Reaction Conditions

Reaction Steps

3-(1-(2,6-dichloro-3-fluorophenyl)ethoxy)-2-nitropyridine (56.7 g, 171 mmol) was dissolved in ethanol (354 mL), 2N HCl (35.4 mL) was added, and iron powder (67.0 g, 1196 mmol) was added portionwise under the cooling of ice bath. After 15 min, it was warmed to 85° C. After 1 h, the reaction liquid was cooled to room temperature, to which was added diatomaceous earth (85 g). After stirring for 15 min, the reaction liquid was sucking filtered using diatomaceous earth. The filtrate was evaporated to dryness under reduced pressure to yield the target product as light yellow solid powder (48.2 g, 160 mmol; yield=94%).

Provenance & Evidence