Ammonium Chloride → HCID 68157595, compound

Participants

Reaction Steps

Potassium tert-butoxide (1.16 g, 10.3 mmol) was added to a solution of 2-methyl-2H-pyrazol-3-ylamine (0.50 g, 5.15 mmol) in THF (10 mL) at 0° C. under nitrogen and the resultant mixture stirred for 15 min. 2,4-difluoro-1-nitrobenzene (0.98 g, 6.18 mmol) in THF (5 mL) was added and stirring continued for 2 h. The reaction mixture was poured into saturated aqueous ammonium chloride solution and extracted with EtOAc (×3). The combined EtOAc extracts were dried (Na2SO4) and concentrated in vacuo. The resultant residue was purified by chromatography (SiO2, 0-2% methanol in DCM) to give the title compound as a yellow/brown crystalline solid (0.98 g, 80%). LCMS (Method C): RT 2.98 min [M+H]+ 237.0

Provenance & Evidence