8-(Benzyloxy)-4-[(2-chloro-4-fluoro-5-methoxyphenyl)amino]-7-methoxybenzo[g]quinoline-3-carbonitrile → HCID 178486404, compound

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A mixture of 8-(benzyloxy)-4-[(2-chloro-4-fluoro-5-methoxyphenyl)amino]-7-methoxybenzo[g]quinoline-3-carbonitrile (1.88 g, 3.70 mmol) and 280 mg of 15% Pd on carbon in a mixture of 50 mL of methylene chloride and 70 mL of N,N-dimethylformamide is hydrogenated at 50-40 psi for 15 hours. The mixture is filtered through Celite and concentrated in vacuo to a small volume. The yellow solid is collected by filtration to provide 1.50 g (95%) of 4-[(2-chloro-4-fluoro-5-methoxyphenyl)amino]-8-hydroxy-7-methoxybenzo[g]quinoline-3-carbonitrile, mp 239-242° C. dec.

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