A reaction mixture of 141.8 mg (0.59 mmol) of 4-chlorobenzo[g]quinoline-3-carbonitrile, 111.1 mg (0.60 mmol) of 4-phenoxyaniline and 57.8 mg (0.50 mmol) of pyridine hydrochloride in 8 ml of 2-ethoxyethanol is heated at 110–120° C. for 1 hour. After cooling, the mixture is diluted with water and made basic by addition of 125.0 mg (1.18 mmol) of sodium carbonate. The precipitate is collected by filtration and washed with water. Drying in vacuo yields the crude product. The crude product is purified by chromatography, eluting with a methylene chloride/methanol gradient from 100:0 to 86:14, to provide 167.8 mg (73.4%) of the pure product as a yellow solid, mp 250–251° C.
