2-Picolinic acid and benzoic acid from di-2-pyridyl ketone and acetophenone: A case of two copper catalysed Baeyer-Villiger rearrangements?

► Two neutral Cu(II) 2-D polymeric complexes. ► Cu-complexes characterized crystallographically. ► Di-2-pyridyl ketone to 2-picolinic acid through Baeyer-Villiger rearrangement. ► Mechanism proposed initially forming an ester, which is then hydrolysed.