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Title: Effect of N-based additive on the optimization of liquid phase oxidation of bicyclic, cyclic and aromatic alcohols catalyzed by dioxidomolybdenum(VI) and oxidoperoxidomolybdenum(VI) complexes
Authors: Maurya, Mannar Ram
Saini N.
Avecilla F.
Published in: RSC Advances
Abstract: Two dioxidomolybdenum(vi) complexes, [MoVIO2(L1)(MeOH)] (1) and [MoVIO2(L2)(MeOH)] (2) and their corresponding oxidoperoxidomolybdenum(vi) complexes, [MoVIO(O2)(L1)(MeOH)] (3) and [MoVIO(O2)(L2)(MeOH)] (4) with ONO tridentate ligands, 4-[3,5-bis(2-hydroxyphenyl)-1,2,4-triazol-1-yl]benzoic acid (H2L1, I) and 3,5-bis(2-hydroxyphenyl)-1-phenyl-1,2,4-triazole (H2L2, II) have been synthesized and characterized by elemental analysis, spectroscopic techniques (infrared, UV-Vis, 1H and 13C NMR) and thermogravimetric analysis. Structures of 1a (DMSO coordinated) and 2 (methanol coordinated) confirmed by single crystal X-ray study reveal that the tridentate ligands bind to the metal center through two oxygen atoms and a ring nitrogen atom. These complexes have been tested as catalysts for the homogeneous oxidation of bicyclic (isoborneol and fenchyl alcohol), aromatic (benzyl alcohol and cumic alcohol) and cyclic (cyclohexanol) alcohols, using 30% H2O2 as an oxidant. Various parameters such as amounts of catalyst, oxidant, solvent and temperature of the reaction mixture have been taken into consideration for the maximum conversion of substrates. Effect of N-based additive (NEt3) on the conversion of substrates as well as selectivity of the corresponding product(s) under the optimized reaction conditions has also been checked and obtained results suggest that addition of an additive reduces time to achieve equilibrium and increases conversion of alcohols. © The Royal Society of Chemistry 2015.
Citation: RSC Advances, 5(122): 101076-101088
Issue Date: 2015
Publisher: Royal Society of Chemistry
Keywords: Aromatic compounds
Benzoic acid
Crystal atomic structure
Nuclear magnetic resonance spectroscopy
Single crystals
Spectroscopic analysis
Synthesis (chemical)
Thermogravimetric analysis
Aromatic alcohols
Fenchyl alcohol
Homogeneous oxidation
Liquid-phase oxidation
Optimized reaction conditions
Reaction mixture
Spectroscopic technique
Tridentate ligands
Molybdenum compounds
ISSN: 20462069
Author Scopus IDs: 7005255411
Author Affiliations: Maurya, M.R., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Saini, N., Department of Chemistry, Indian Institute of Technology Roorkee, Roorkee, 247 667, India
Avecilla, F., Departamento de Química Fundamental, Universidade da Coruña, Campus de A Zapateira, Coruña, 15071 A, Spain
Funding Details: 
Corresponding Author: Maurya, M.R.; Department of Chemistry, India; email:
Appears in Collections:Journal Publications [CY]

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