5-Methoxy-o-toluidine → 7-Chloro-4-(5-methoxy-2-methylanilino)-6-nitro-3-quinolinecarbonitrile

Participants

Reaction Conditions

Reaction Steps

A mixture of 0.9 g (3.36 mmol) of 4,7-dichloro-6-nitro-3-quinolinecarbonitrile, 0.55 g (4.0 mmol) of 5-methoxy-2-methylaniline, 0.46 g (4.0 mmol) of pyridine hydrochloride in 10.0 mL of 2-ethoxyethanol is heated at 115° C. for 1 hour, cooled and poured into a saturated solution of sodium bicarbonate. The oil is extracted with methylene chloride, dried over anhydrous sodium sulfate and the solvent is evaporated to yield a foam. This is purified by silica gel chromatography, eluting with methylene chloride/methanol (99.5:0.5) to yield 0.77 g of 7-chloro-4-(5-methoxy-2-methylanilino)-6-nitro-3-quinolinecarbonitrile as a yellow solid, mp 180-182° C.

Provenance & Evidence