Hydrochloric Acid → HCID 21840827, compound

Participants

Reaction Steps

A mixture of 3,4-dimethoxy-6-(2-chloroisonicotinoyl)aniline (2.93 g), methyl acetoacetate (2.16 ml), conc. hydrochloric acid (0.1 ml) and acetic acid (30 ml) is heated under reflux for two hours. The reaction mixture is cooled to room temperature, and thereto is added an aqueous sodium hydrogen carbonate solution. The mixture is extracted with ethyl acetate, and the extract is washed, dried, and concentrated. The residue is purified by silica gel column chromatography (solvent; chloroform:ethyl acetate=9:1) to give 2-chloro-4-(6,7-dimethoxy-3-methoxycarbonyl-2-methylquinolin-4-yl)pyridine (3.0 g).

Provenance & Evidence