Water → 6,7-Dimethoxy-4-(3,4-dimethoxyphenyl)-2-(2-ethylimidazol-1-ylmethyl)quinoline-3-carboxylic acid ethyl ester

Participants

Reaction Steps

Oily sodium hydride (60%, 0.323 g) was added to a solution of 2-ethylimidazole (0.776 g) in N,N-dimethylformamide (30 ml), and the mixture was stirred at room temperature for 15 minutes. Then ethyl 2-chloromethyl-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate(3.0 g) was added. The mixture was stirred at 80° C. for 1 hour and poured into water, and the resulting crystals were collected by filtration and recrystallized from ethanol to give ethyl 2-(2-ethylimidazol-1-ylmethyl)-6,7-dimethoxy-4-(3,4-dimethoxyphenyl)quinoline-3-carboxylate (2.5 g, 74%). Colorless prisms. mp. 163°-164° C.

Provenance & Evidence