Ammonium Chloride → 4-(4-Amino-2-fluorophenoxy)-6-[(pyrrolidin-1-yl)carbonylamino]pyrimidine

Participants

Reaction Steps

Pyrrolidine-1-carboxylic acid [6-(2-fluoro-4-nitrophenoxy)pyrimidin-4-yl]amide (610 mg) was dissolved in ethanol (15 ml)-water (3 ml), and then electrolytic iron powder (610 mg) and ammonium chloride (1.20 g) were added thereto, followed by heating under reflux for 30 min. The reaction mixture was cooled down to room temperature, and ethyl acetate-tetrahydrofuran (1:1) was then added thereto, followed by stirring. The mixture was filtered through celite to remove an insoluble portion, which was washed with ethyl acetate and water. The organic layer of the filtrate was washed with water and brine in this order, and dried over anhydrous sodium sulfate. The solvent was evaporated under a reduced pressure to give a residue, which was then purified by silica gel column chromatography (Fuji Silysia NH, eluent; hexane:ethyl acetate=1:1 to 1:5). Fractions containing the target compound was concentrated under a reduced pressure, and dried in vacuum to provide the titled compound (495 mg, 88.6%) as a pale yellow solid.

Provenance & Evidence