Pyridinium chloride → 4-({3-chloro-4-[(1-methyl-1H-imidazole-2-yl)sulfanyl]phenyl}amino)-6-ethoxy-7-fluoro-3-quinolinecarbonitrile

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Reaction Steps

Following the procedure of Example 1, a mixture of 2.4 g (9.72 mmol) 4-chloro-6-ethoxy-7-fluoro-3-quinolinecarbonitrile, 2.56 g (10.7 mmol) of 3-chloro-4-(1-methyl-1H-imidazole-2-ylsulfanyl)phenylamine and 1.2 g (10.38 mmol) of pyridine hydrochloride are refluxed in 2-ethoxyethanol (30 mL) at 110°0 C. for 1 hour to yield 4-({3-chloro-4-[(1-methyl-1H-imidazole-2-yl)sulfanyl]phenyl}amino)-6-ethoxy-7-fluoro-3-quinolinecarbonitrile as a pink solid, mp 251-254° C.

Provenance & Evidence