Dichloromethane → N-(4-chloro-2-fluorophenyl)-6-methoxy-7-{[(3R)-1-methylpiperidin-3-yl]methoxy}quinazolin-4-amine

Beteiligte Stoffe

Reaktionsschritte

A solution of (R)-(1-methylpiperidin-3-yl)methanol (2.29 g, 18 mmol) in methylene chloride (10 ml) was added to a stirred mixture of 4-(chloro-2-fluoroanilino)-7-hydroxy-6-methoxyquinazoline (4.0 g, 12.5 mmol), (prepared as described for the starting material in Example 2), and triphenylphosphine (9.81 g, 37.5 mmol) in methylene chloride (200 ml). Diethyl azodicarboxylate (5.87 ml, 37 mmol) was added dropwise and the reaction mixture was stirred for 18 hours at ambient temperature. The volatiles were removed by evaporation and the residue was purified by column chromatography eluting with methylene chloride/methanol/aqueous ammonia (a gradient from 100/0/0 to 85/15/0.1). The purified product was triturated with ethyl acetate, collected by filtration, washed with ethyl acetate and dried to give (R)-4-(4-chloro-2-fluoroanilino)-6-methoxy-7-(1-methylpiperidin-3-yl)methoxyquinazoline (2.78 g, 52%).

Herkunft & Nachweise