Copper-catalyzed C–N cross-coupling of arylboronic acids with N-acylpyrazoles

Abstract A copper-catalyzed C–N bond forming reaction of arylboronic acids and N -acylpyrazoles was developed. This procedure used N -acetyl protected pyrazoles as starting material instead of free pyrazoles (NH). The reaction worked under neutral conditions and did not require any base or ligand. The reaction showed good functional group tolerance.