Organocatalyzed oxidation of alcohols to aldehydes with molecular oxygen

Pulp delignification with oxygen and copper(II)-polyimine complexes

“…Surprisingly, the Cu-daphen did not exhibit any catalytic activity on the oxidation of native lignin in pulp, although this system was able to oxidize a nonphenolic lignin model (Lahtinen et al 2007). One explanation may be that the low solubility of daphen in aqueous solution Brought to you by | EP Ipswich Authenticated Download Date | 10/9/14 6:10 AM prevented the formation of an active complex between Cu and the ligand.…”

“…On the contrary, the oxidation of Cu(I) to Cu(II) by oxygen might be slow. Ligand 10 is a phenanthrene known as being effective in combination with Cu(II) for the oxygen oxidation of veratryl alcohol (Lahtinen et al 2007). …”

Highly efficient self-esterification of aliphatic alcohols using supported gold nanoparticles under mild conditions

“…The selective oxidation of the primary alcohols in the presence of Au NPs proceeds to form aldehydes (step 1). The presence of NaOH is needed for the deprotonation of alcohols, making them more susceptible to oxidation to aldehyde [46]. Then, the condensation reaction between aldehyde and alcohol takes place, leading to the formation of hemiacetal species (step 2) [28,29,31,47].…”

An Overview of Selective Oxidation of Alcohols: Catalysts, Oxidants and Reaction Mechanisms

“…Ahmad et al [54] devoted themselves into developing green catalytic systems for alcohol oxidation [3,[55][56][57][58][59][60]. They reported detailed studies on oxidation of benzylic alcohols in water over several copper salts catalysts with H 2 O 2 as an end oxidant.…”