Citric Acid → HCID 178522441, compound

Participants

Reaction Conditions

Reaction Steps

A mixture of 2,6-difluoro-N-[3-(5-methoxy-1H-benzimidazol-2-yl)-1H-pyrazol-4-yl]-benzamide (Example 27) (850 mg) and aluminium (III) chloride (220 mg) in toluene (4 ml) was heated at 80° C. for 3 hours, cooled to ambient temperature and saturated aqueous NaHCO3 (4 ml) followed by 5% aqueous citric acid (4 ml) added. The mixture was extracted with EtOAc and organic extract washed with brine, dried (MgSO4) and reduced in vacuo. Residue submitted for preparative LC/MS to give 2,6-difluoro-N-[3-(5-hydroxy-1H-benzimidazol-2-yl)-1H-pyrazol-4-yl]-benzamide (22 mg) as a beige solid. (LC/MS: Rt 2.01, [M+H]+ 356.09).

Provenance & Evidence