Selective autoxidation of some phenols using bis(salicylaldehyde)ethylenediiminecobalt catalysts

Electroassisted catalysis of the reductive coupling of 2-bromooctane and methyl vinyl ketone by a binuclear cobalt–salen–iron complex in DMF solution: electrosynthesis and cyclic voltammetry analysis

“…13,14 This allowed us to anticipate that the combined use of CoSalen (as catalyst) with the undivided electrochemical cell process may o †er substantial advantages in the reductive coupling of alkyl halides and activated oleÐns. This is exempliÐed in this study by the application of electrogenerated CoISalen~in dimethylformamide (DMF) in the conjugate addition of 2-bromooctane to methyl vinyl ketone [reaction (1)] :…”

Oxidation of 4-alkyl-2,6-di-tert-butylphenols with .beta.-manganese dioxide

“…Oxidation of 4-Alkyl- The preparation of 2,6-di-ieri-butyl-p-benzoquinon'e (1) by the salcomine-catalyzed air oxidation of 2,6-diferi-butylphenol (2) was recently reported.1•2 The oxidation of 2 or 4-alkyl-2,6-di-feri-butylphenols (3a) with most oxidizing agents gives only a low yield of l.…”

Studies of Synthetic Macrocyclic Complexes of Co (II) and Mn( II) in the Catalytic Oxidation of Hydroquinones

“…The axial ligation costants and thermodynamic parameters for these types of macrocyclic complexes have already been reported. [3][4][5][6] The catalytic oxidation of methyl hydroquinone by tetramethyl tetraaza cobalt macrocyclic complexes has also been reported. [7][8][9][10][11][12] We carried out the autooxidation of methoxy and some other hydroquinones in presence of Co(II) and Mn(II) complexes of hexamethyl tetraaza macrocyclic ligands A and B.…”