Copper-assisted oxidative coupling of primary alcohol and hydrazone: A novel function model of galactose oxidase

Treatments of the MeOH, EtOH and PrOH solutions of 2-acetylpyridine, hydrazine and CuII salts (in molar ratio 2:3:2) afforded respectively the complexes, [CuII(HL)(Cl)](SO3CF3)H2O (1), [CuII(MeL)(H2O)](ClO4)2 (2) and [CuII(EtL)](Cl)](ClO4) (3) (L = bis-(methyl, 2-pyridyl ketone hydrazonyl)methine), in which the ligands, HL, MeL and EtL are formed in situ from oxidative couplings of alcohols and hydrazones.

Proposed transition state of concerted hydrogen transfer from alcohol to [CuII(MPKH-H)2∗]2+Figure optionsDownload as PowerPoint slide