2,4-Difluoronitrobenzene → HCID 66589191, compound

Participants

Reaction Conditions

Reaction Steps

To a solution of 2,4-difluoro-1-nitrobenzene (1.76 g, 11.1 mmol) and DIEA (1.93 ml, 11.1 mmol) in THF (20 ml) was added dropwise a solution of 5-cyclopropyl-1H-pyrazol-3-amine (0.91 g, 7.39 mmol) in THF (5 ml) at 25° C. After addition, the reaction mixture was stirred at 80° C. for 48 hours. The solvent was removed under reduced pressure and the resulted residue was purified by column chromatography (hexane:DCM:EtOAc=2:1:1) to give the title compound as a yellow solid (0.62 g, 32%). NMR (400 MHz) 12.37 (s, 1H), 9.83 (s, 1H), 8.25 (m, 1H), 7.98 (d, J=11.2 Hz, 1H), 6.75 (m, 1H), 5.95 (s, 1H), 1.90 (m, 1H), 0.96 (m, 2H), 0.72 (m, 2H).

Provenance & Evidence