Cesium carbonate → 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-6-methoxyquinazoline

Participants

Reaction Steps

A mixture of 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-chloro-6-methoxyquinazoline (20.0 g, 52.3 mmol), 4-fluoro-5-hydroxy-2-methylindole (10.5 g, 63.3 mmol), (prepared as described for the starting material in Example 1), and cesium carbonate (34.4 g, 106 mmol) in acetone (500 ml) was heated at reflux for 4 hours. The mixture was cooled and allowed to stand overnight. The mixture was filtered and the solid suspended in water and re-filtered and dried under vacuum. The solid was purified by column chromatography eluting with methylene chloride/methanol (saturated with ammonia) (95/5) to give 7-[3-(4-acetylpiperazin-1-yl)propoxy]-4-[(4-fluoro-2-methyl-1H-indol-5-yl)oxy]-6-methoxyquinazoline (20.4 g, 77%) as a white solid.

Provenance & Evidence