Selective Catalytic Oxidation of Aldehydes by a Molybdenum System


  • Ikram El Amrani Université Abdelmalek Essaadi, Faculté des Sciences Tétouan.
  • Ahmed Atlamsani Université Abdelmalek Essaadi, Faculté des Sciences Tétouan.



The oxidation of aldehydes with molecular oxygen was investigated in the presence of MoO2(acac)2(Bis(acetylacetonato)dioxomolybdenum(VI)), and under mild condition (temperature and pressure). In the oxidation reaction system, the effect of the catalyst has been evaluated. In addition, the factor of solvents was deeply discussed. The process is particularly selective for linear and aromatic aldehydes. Finally, the use of environmentally-friendly oxidation system, including mild conditions and inexpensive oxidant, can make this process very attractive in the fine chemical synthesis.

Author Biographies

Ikram El Amrani, Université Abdelmalek Essaadi, Faculté des Sciences Tétouan.

Laboratoire des Matériaux et Systèmes Interfaciaux, P.B.: 2121, 93030 Tétouan, Morocco

Ahmed Atlamsani, Université Abdelmalek Essaadi, Faculté des Sciences Tétouan.

Laboratoire des Matériaux et Systèmes Interfaciaux, P.B.: 2121, 93030 Tétouan, Morocco


- M. Hudlicky, Oxidations in Organic Chemistry, ACS Monograph Series 186, J. Am. Chem. Soc., Washington, DC, 1990, 174.

- A. H. Hainess, Methods for the Oxidation of Organic Compounds; Academic: New York, 1988, 221-423.

- T. Punniyamurthy, S. Velusamy, J. Iqbal, Recent Advances in Transition Metal-Catalyzed Oxidation of Organic Substrates with Molecular Oxygen, Chem. Rev., 2005, 105, 2329−2363.

- D. Ramakrishna, B. R. Bhat, Effective Oxidation of Alcohols with H5IO6 Catalyzed by Nickel(II) Schiff Base Complexes, Synth. React. Inorg. Met. -Org. Nano-Metal Chem., 2010, 40,


- N. N. Greenwood, A. Earnshaw, Chromium, molybdenum and tungsten. In ‘Chemistry of the elements’ 2nd edn, Elsevier Science., 1997, 1002.

- E. R. Braithwaite, J. Haber, Molybdenum: An outline of its chemistry and uses. Elsevier, 1994, 9.

- K. Jeyakumar, D. Kchand, Application of molybdenum (VI) dichloride dioxide (MoO2Cl2) inorganic transformations, J. Chem. Sci., 2009, 121, 111–123.

- W. W. Williams, J. W. Conley, Organic Pigment, Ind. Eng. Chem., 1955, 47, 1507-1510.

- W. G. Huckle, E. Lalor, Inorganic Pigments, Ind. Eng. Chem., 1955, 47, 1501-1506.

- a) J. C. Vedrine, I. Fechete, Heterogeneous partial oxidation catalysis on metal oxides, C. R. Chim., 2016, 19, 1-23.

b) A. V. Biradar, M. K. Dongare, S. B. Umbarkar, Selective oxidation of primary aromatic alcohols to aldehydes using molybdenum acetylide oxo-peroxo complex as catalyst.Tetrahedron Lett., 2009, 50, 2885–2888.

- (a) D. B. McDonald, J. I. Shulman, Spectrophotometric determination of triphenylphosphine in dilute solutions, Anal. Chem., 1975, 47, 2023-2024.

(b) G. J. J. Chen, J. W. McDonald, W. E. Newton, Synthesis of molybdenum (IV) and molybdenum (V) complexes using oxo abstraction by phosphines. Mechanistic implications, Inorg. Chem., 1976, 15, 2612-2615.

(c) C.G. Young, A.G. Wedd, Models of Pterin-Containing Molybdenum Enzymes, ACS Publications, 1993, 5, 70-82.

(d) A. Nakamura, M. Nakayama, K. Sugihashi, S. Otsuka, Reactivity of oxomolybdenum (VI), - (V), and - (IV) compounds as controlled by sulfur chelate ligands, Inorg. Chem., 1979, 18, 394-400.

- G. D. Watt, J. W. McDonald, W. E. Newton, Thermochemical studies of molybdenum dithiocarbamate complexes as models for molybdoenzymes, J. Less-Common. Met., 1977, 54, 415-423.

- Y. Ono, in: J. M. Thomas, K.I. Zamaraev eds., Perspectives in Catalysis (Blackwell Scientific Publications, London), 1992, 431.

- C. L. Hill, C. M. Prosser-McCartha, Homogeneous catalysis by transition metal-oxygen anion clusters, Coord. Chem. Rev., 1995, 143, 407-455.

- T. Okuhara, N. Mizuno, M. Misono, Catalytic Chemistry of Heteropoly Compounds, Adv. Catal.(Academic Press, New York). 1996, 41, 113-252.

- R. Neumann, Polyoxometalate Complexes in Organic Oxidation Chemistry, Prog. Inorg. Chem., 1998, 47, 317-370.

- I. V. Kozhevnikov, Catalysis by Heteropoly Acids and Multicomponent Polyoxometalates in Liquid-Phase Reactions, Chem. Rev., 1998, 98, 171-198.

- J.-M. Brégeault, F. Launay, A. Atlamsani, Catalytic oxidative carbon-carbon bond cleavage of ketones with dioxygen: assessment of some metal complexes. Some alternatives for preparing α, ω-dicarboxylic acids, C. R. Chim., 2001, 4, 11-26.

- I. V. Kozhevnikov, “Catalysts for fine chemicals synthesis, Catalysis by Polyoxometalates”, John Wiley & Sons Ltd, The Atrium, Southern Gate, Chichester, England, 2002.

- J. M. Brégeault, Transition-metal complexes for liquid-phase catalytic oxidation: some aspects of industrial reactions and emerging technologies. Dalton.Trans, 2003, 3289-3302.

- I. El Younssi, T. Rhadfi, A. Atlamsani, J-P, Quisefit, F. Herbst, K. Draoui, K-10 montmorillonite: An efficient and reusable catalyst for the aerobic CC bond cleavage of α-substituted ketones, J. Mol. Catal. A: Chem., 2012, 363, 437-445.

- I. El Amrani, A. Atlamsani, M. Dakkach, M. Rodríguez, I. Romero, S. Amthiou, Efficient and selective oxidation of aldehydes with dioxygen catalysed by vanadium-containing heteropolyanions, C. R. Chim., 2017, 20, 888-895.

- I. El Amrani, A. Atlamsani, K-10 montmorillonite: An efficient and reusable catalyst for selective oxidation of aldehydes in the presence of dioxygen, Mediterr.J.Chem., 2019, 8, 380-389.






Catalysis Chemistry