Nitro and Nitrato Palladium Complexes in Oxidation Processes: The Mechanism of the Formation of 1,1- and 1,2-addition Products during Ethylene Oxidation in Chloroform-Acetic Acid Solution
Journal of Molecular Catalysis (Continued after 1994 as Journal of Molecular Catalysis A: Chemical and Journal of Molecular Catalysis B: Enzymatic)
The stoichiometric oxidation of ethylene by Pd(NO(n))mCl2-mL2 complexes (where n = 2, 3; m = 0, 1, 2; L = CD3CN) in chloroform-acetic acid solution was studied with H-1 NMR. This reaction becomes catalytic in the presence of oxygen. The product distribution depends on the nature of the ligands and on the solvent composition. The reaction leads mostly to acetaldehyde, nitroethylene, ethylene glycol monoacetate, and 1,1-disubstituted ethanes. Kinetics and spectral data indicate the formation of a number of intermediates. The mechanism of ethylene oxidation to 1,1- and 1,2-addition products is discussed.