1-(3-Chloropyridin-2-yl)ethanone → 5-Chloro-2-(3-chloropyridin-2-yl)-[1,8]naphthyridine

Participants

Reaction Conditions

Reaction Steps

Dissolve 2-amino-4-chloronicotinaldehyde (312 mg, 2.0 mmol) and 2-acetyl-3-chloropyridine (310 mg, 2.0 mmol) in anhydrous THF (5.0 mL) and cool it to −20° C. under N2 atmosphere. Add in portion t-BuOK (448 mg, 4.0 mmol) to the reaction mixture and stir the mixture at 10° C. for 2 hours. Concentrate the reaction mixture under vacuum, dilute the residue with water (10 mL), filter the solid, wash the solid with water and dry under high vacuum to afford the title product as a yellow solid.

Provenance & Evidence