1,1,1-Trimethoxybutane → 4-chloro-1-{[3-(4-fluorophenyl)isoxazol-5-yl]methyl}-2-propyl-1H-imidazo[4,5-c]quinoline

Participants

Reaction Conditions

Reaction Steps

Under a nitrogen atmosphere, pyridine hydrochloride (0.020 g, 0.19 mmol), trimethyl orthobutyrate (2.1 g, 14 mmol), 2-chloro-N4-{[3-(4-fluorophenyl)isoxazol-5-yl]methyl}quinoline-3,4-diamine (3.5 g, 9.5 mmol), and toluene (50 mL) were combined and heated at 110° C. for 18 hours. The volatiles were removed under reduced pressure. The crude product was purified by column chromatography on silica gel (250 g, eluting with 20% to 40% ethyl acetate in hexane) to provide 0.806 g of 4-chloro-1-{[3-(4-fluorophenyl)isoxazol-5-yl]methyl}-2-propyl-1H-imidazo[4,5-c]quinoline as a yellow solid.

Provenance & Evidence