Dimethylformamide → HCID 22227869, compound

Participants

Reaction Conditions

Reaction Steps

N-[3-Cyano-4-(homopiperazin-1-yl)phenyl]-1-(4-fluorophenyl)-5-methylpyrazole-4-carboxamide (1.5 g), potassium carbonate (0.6 g) and 2-bromoethyl acetate (0.7 g) were added to dimethylformamide (20 ml) and the mixture was stirred at 60° C. for 1 h. The reaction mixture was added into water and extracted with ethyl acetate. The organic layer was washed with saturated brine, and the solvent was evaporated under reduced pressure. To the residue were added 2N aqueous sodium hydroxide solution (10 ml) and ethanol (20 ml) and the mixture was stirred at a refluxing temperature for 1 h. The solvent was evaporated under reduced pressure and dilute hydrochloric acid was added. The obtained crystals were recrystallized from hydrous ethanol to give the title compound (1.1 g), melting point: 124° C.

Provenance & Evidence