Diethyl Ether → HCID 57677567, compound

Participants

Reaction Steps

4-(Pyrrolidin-1-yl)piperidine-1-carboxylic acid [4-(4-amino-3-chlorophenoxy)pyridin-2-yl]amide (129 mg) was dissolved in N,N-dimethylformamide (2 ml) under a nitrogen atmosphere, and then N-(4-fluorophenyl)malonic acid (183 mg), triethylamine (0.130 ml) and (1H-1,2,3-benzotriazol-1-yloxy)[tri(dimethylamino)]phosphonium hexafluorophosphate (411 mg) were added thereto at 50° C., followed by stirring at the same temperature for 5 hrs and 30 min. The reaction mixture was cooled down to room temperature, followed by stirring for 2 days. The reaction mixture was partitioned between ethyl acetate and a 1 N aqueous solution of sodium hydroxide. The organic layer was washed with a saturated aqueous solution of sodium hydrogencarbonate, water and brine in this order, and dried over anhydrous sodium sulfate. The solvent was evaporated to give a residue, which was then purified by silica gel column chromatography (FUJI Silysia NH, eluent; ethyl acetate:ethanol=19:1). Fractions containing the target compound were concentrated to give a residue, to which diethyl ether was added to precipitate crystals. The crystals were filtered off and dried under aeration to provide the titled compound (64.7 mg, 35.1%) as white crystals.

Provenance & Evidence