Dimethylformamide → HCID 69082194, compound

Participants

Reaction Conditions

Reaction Steps

A thick walled glass tube, equipped with a stir bar, was charged with palladium (II) acetate (225 mg, 1.00 mmol), acetonitrile (50 mL), N,N-dimethylformamide (20 mL) triethylamine (8.25 mL, 59.3 mmol), tri-o-tolylphosphine (900 mg, 2.97 mmol), acrylonitrile (770 mg, 21.8 mmol) and 1-[4-amino-7-bromo-2-(methoxymethyl)-1H-imidazo[4,5-c]quinolin-1-yl)-2-methylpropan-2-ol (7.50 g, 19.8 mmol). The reaction mixture was purged with nitrogen and the tube was sealed and heated at 120° C. in an oil bath for 18 hours. The reaction was cooled to ambient temperature and then concentrated under reduced pressure. The resulting solid was partitioned between chloroform (300 mL) and aqueous 1% sodium carbonate (100 mL). The fractions were separated and the aqueous fraction was extracted with chloroform (4×100 mL). The combined organic fractions were concentrated under reduced pressure and purified by chromatography using a HORIZON HPFC system (silica cartridge, eluting with 0-7% gradient of methanol in dichloromethane) to provide 5.2 g of 3-[4-amino-1-(2-hydroxy-2-methylpropyl)-2-(methoxymethyl)-1H-imidazo[4,5-c]quinolin-7-yl]prop-2-enenitrile as an off-white solid.

Provenance & Evidence