1-(2-(Dimethylamino)ethyl)piperazine → N-[4-({2-[({4-[2-(Dimethylamino)ethyl]piperazin-1-yl}carbonyl)amino]pyridin-4-yl}oxy)-2-fluorophenyl]-N'-(4-fluorophenyl)cyclopropane-1,1-dicarboxamide

Participants

Reaction Steps

To a solution of phenyl N-[4-(3-fluoro-4-{[1-(4-fluorophenylcarbamoyl)cyclopropanecarbonyl]amino}phenoxy)pyridin-2-yl]-N-phenoxycarbonylcarbamate (50.0 mg) in N,N-dimethylformamide (1.0 ml) was added 1-(2-dimethylaminoethyl)piperazine (59.0 mg), followed by stirring at room temperature for 25 hr. The reaction mixture was partitioned between ethyl acetate and a 1N aqueous solution of sodium hydroxide. The organic layer was washed with brine, and dried over anhydrous sodium sulfate. The solvent was removed, the residue was purified by silica gel column chromatography (Fuji Silysia NH, heptane:ethyl acetate=1:2, ethyl acetate, then ethyl acetate:methanol=20:1). Fractions containing the target compound were concentrated. To the residue was added diethyl ether:hexane=1:3, and the precipitate was collected by filtration. This was washed with diethyl ether:hexane=1:3 and dried under aeration to provide the titled compound as white powder (31.7 mg, 69.6%).

Provenance & Evidence