Hydrochloric Acid → HCID 86723864, compound

Participants

Reaction Steps

To a solution of N′-[5-[1-(4-cyanophenyl)-1H-pyrazol-5-yl]-3-(3-nitrophenyl)-2,6-dioxo-1-propyl-1,2,3,6-tetrahydropyrimidin-4-yl]-N,N-dimethylformimidamide (prepared in Example 29) (11.0 mg) in ethanol (1.0 ml) was added 1N hydrochloric acid (2.0 ml) and the resulting mixture was stirred with heating under reflux for six hours. The reaction mixture was concentrated under reduced pressure, and weakly basified with aqueous sodium hydroxide solution, and thereto was added water and the resulting mixture was extracted with ethyl acetate (10 ml×2). The organic layer was washed with saturated saline (10 ml), dried over anhydrous sodium sulfate and then concentrated under reduced pressure. The residue was purified by silica gel column chromatography (eluent: chloroform/methanol) to afford 4-[5-[6-amino-1-(3-nitrophenyl)-2,4-dioxo-3-propyl-1,2,3,4-tetrahydropyrimidin-5-yl]-1H-pyrazol-1-yl]benzonitrile (7.0 mg).

Provenance & Evidence