Dimethylformamide → HCID 86605778, compound

Participants

Reaction Steps

To a mixture of 3-[{4-[(2-phenyl-5-methyl-1,3-oxazol-4-yl)methoxy]benzyl}oxy]-1-phenyl-1H-pyrazole-4-carbaldehyde (0.50 g), ethyl diethylphosphonoacetate (0.27 g) and N,N-dimethylformamide (20 mL) was added sodium hydride (60% in oil, 0.050 g) under ice-cooling. The mixture was stirred at room temperature for 15 hrs. Water was poured into the reaction mixture, and the mixture was extracted with ethyl acetate. The ethyl acetate layer was washed with saturated brine, dried over anhydrous magnesium sulfate and concentrated to give ethyl (2E)-3-[3-({4-[(2-phenyl-5-methyl-1,3-oxazol-4-yl)methoxy]benzyl}oxy)-1-phenyl-1H-pyrazol-4-yl]-2-propenoate as colorless crystals (0.51 g, yield 86%). Recrystallization from ethyl acetate-hexane gave colorless prism crystals. melting point: 154-155° C.

Provenance & Evidence