scholarly journals Manganese porphyrins as efficient catalysts in solvent-free cyclohexane oxidation

2020 ◽  
Vol 13 (1) ◽  
pp. 1563-1574 ◽  
Author(s):  
Mariana Goes de Araujo Tôrres ◽  
Vinicius Santos da Silva ◽  
Ynara Marina Idemori ◽  
Gilson DeFreitas-Silva
Keyword(s):  
Solvent Free ◽  
Cyclohexane Oxidation ◽  
Manganese Porphyrins

An eco-friendly approach to the cyclohexane oxidation catalyzed by manganese porphyrins: Green and solvent-free systems

Polyhedron ◽  
2019 ◽  
Vol 163 ◽  
pp. 144-152 ◽  
Author(s):  
Adriano Silva Guimarães ◽  
Bernardo Schmitberger ◽  
Alexandre Moreira Meireles ◽  
Dayse Carvalho da Silva Martins ◽  
Gilson DeFreitas-Silva
Keyword(s):  
Solvent Free ◽  
Cyclohexane Oxidation ◽  
Manganese Porphyrins

scholarly journals Scorpionate complexes of vanadium(III or IV) as catalyst precursors for solvent-free cyclohexane oxidation with dioxygen

2009 ◽  
Vol 81 (7) ◽  
pp. 1217-1227 ◽  
Author(s):  
Gopal S. Mishra ◽  
Telma F. S. Silva ◽  
Luísa M. D. R. S. Martins ◽  
Armando J. L. Pombeiro
Keyword(s):  
High Selectivity ◽  
Main Product ◽  
Radical Reaction ◽  
Solvent Free ◽  
Cyclohexane Oxidation ◽  
Vanadium Complexes ◽  
Free Radical Reaction ◽  
Solvent Free Conditions ◽  
Pyrazinecarboxylic Acid ◽  
Radical Traps

The V-scorpionate vanadium complexes [VCl3{HC(pz)3}] (pz = pyrazolyl) and [VCl3{SO3C(pz)3}] catalyze cyclohexane oxidation with dioxygen, to cyclohexanol (the main product) and cyclohexanone, under solvent-free conditions. [VCl3{HC(pz)3}] provides the best activity (13 % conversion into the ketone and alcohol, with high selectivity, at the O2 pressure of 15 atm, at 140 ºC, 18 h reaction time). The reaction is further promoted (to 15 % conversion) by pyrazinecarboxylic acid (PCA). The use of C- or O-radical traps supports the involvement of a free-radical reaction mechanism. Several reaction parameters have been varied in a systematic study, directed toward optimization of the process.

Classical and green cyclohexane oxidation catalyzed by manganese porphyrins: Ethanol as solvent and axial ligand

Polyhedron ◽  
2020 ◽  
Vol 187 ◽  
pp. 114627
Author(s):  
Alexandre Moreira Meireles ◽  
Dayse Carvalho da Silva Martins
Keyword(s):  
Axial Ligand ◽  
Cyclohexane Oxidation ◽  
Manganese Porphyrins

Silver modified carbon quantum dots for solvent-free selective oxidation of cyclohexane

2015 ◽  
Vol 39 (4) ◽  
pp. 2815-2821 ◽  
Author(s):  
Yanmei Yang ◽  
Naiyun Liu ◽  
Shi Qiao ◽  
Ruihua Liu ◽  
Hui Huang ◽  
...  
Keyword(s):  
Quantum Dots ◽  
Visible Light ◽  
Selective Oxidation ◽  
Carbon Quantum Dots ◽  
Solvent Free ◽  
Cyclohexane Oxidation

The silver modified carbon quantum dots (Ag–CQDs) exhibit excellent catalytic ability for cyclohexane oxidation under visible light.

Effect of imidazole on biomimetic cyclohexane oxidation by first-, second-, and third-generation manganese porphyrins using PhIO and PhI(OAc)2 as oxidants

2015 ◽  
Vol 491 ◽  
pp. 17-27 ◽  
Author(s):  
Vinicius Santos da Silva ◽  
Alexandre Moreira Meireles ◽  
Dayse Carvalho da Silva Martins ◽  
Júlio Santos Rebouças ◽  
Gilson DeFreitas-Silva ◽  
...  
Keyword(s):  
Cyclohexane Oxidation ◽  
Third Generation ◽  
Manganese Porphyrins

Selective cyclohexane oxidation catalyzed by manganese porphyrins and co-catalysts

2016 ◽  
Vol 264 ◽  
pp. 185-190 ◽  
Author(s):  
Tao Wang ◽  
Yuanbin She ◽  
Haiyan Fu ◽  
Hui Li
Keyword(s):  
Cyclohexane Oxidation ◽  
Manganese Porphyrins ◽  
Co Catalysts

Au nanoparticles confined in hybrid shells of silica nanospheres for solvent-free aerobic cyclohexane oxidation

2017 ◽  
Vol 52 (12) ◽  
pp. 7186-7198 ◽  
Author(s):  
Lifang Chen ◽  
Yuanyuan Zhou ◽  
Zhenyou Gui ◽  
Hongye Cheng ◽  
Zhiwen Qi
Keyword(s):  
Au Nanoparticles ◽  
Solvent Free ◽  
Cyclohexane Oxidation ◽  
Silica Nanospheres

Magnetic properties of new charge-transfer complexes based on manganese porphyrins

1997 ◽  
Vol 90 (3) ◽  
pp. 407-413
Author(s):  
MARC KELEMEN ◽  
CHRISTOPH WACHTER ◽  
HUBERT WINTER ◽  
ELMAR DORMANN ◽  
RUDOLF GOMPPER ◽  
...  
Keyword(s):  
Magnetic Properties ◽  
Charge Transfer ◽  
Charge Transfer Complexes ◽  
Manganese Porphyrins
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