Dimethylformamide dimethyl acetal → HCID 178497299, compound

Participants

Reaction Steps

To a suspension of 4-[3-(4-fluorophenyl)-1H-pyrazol-4-yl]-2-pyridinecarboxamide prepared as set forth in Example A-223 (2.9 g, 0.01 mol) in 50 mL of methanol was added N,N-dimethylformamide dimethyl acetal (3.67 g, 0.03 mol) dropwise. The reaction mixture was stirred at room temperature overnight and heated at reflux for 4 hours. After cooling, the precipitate was collected by filtration and air-dried to give 2.0 g of methyl 4-[3-(4-fluorophenyl)-1H-pyrazol-4-yl]-2-pyridinecarboxylate as a white solid (69% yield), mp: 239-241° C. Anal. Calc'd for C16H12FN3O2: C, 64.64; H, 4.07; N, 14.13. Found: C, 64.36; H, 4.10; N, 14.27.

Provenance & Evidence