scholarly journals Selective Oxidation of Ethane to Acetic Acid Catalyzed by a C-Scorpionate Iron(II) Complex: A Homogeneous vs. Heterogeneous Comparison

Molecules ◽  
2020 ◽  
Vol 25 (23) ◽  
pp. 5642
Author(s):  
Inês A. S. Matias ◽  
Ana P. C. Ribeiro ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Acetic Acid ◽  
Selective Oxidation ◽  
Catalytic System ◽  
Acid Synthesis ◽  
Magnetic Core ◽  
Core Shell ◽  
Ethane Oxidation ◽  
One Pot ◽  
Acid Catalyzed ◽  
First Time

The direct, one-pot oxidation of ethane to acetic acid was, for the first time, performed using a C-scorpionate complex anchored onto a magnetic core-shell support, the Fe3O4/TiO2/[FeCl2{κ3-HC(pz)3}] composite. This catalytic system, where the magnetic catalyst is easily recovered and reused, is highly selective to the acetic acid synthesis. The performed green metrics calculations highlight the “greeness” of the new ethane oxidation procedure.

Lewis acid-catalyzed tandem cyclization of in situ generated o-quinone methides and arylsulfonyl hydrazides for a one-pot entry to 3-sulfonylbenzofurans

2019 ◽  
Vol 6 (24) ◽  
pp. 3929-3933 ◽  
Author(s):  
Fan-Xiao Meng ◽  
Ruo-Nan Wang ◽  
Hong-Li Huang ◽  
Shu-Wen Gong ◽  
Qian-Li Li ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Quinone Methides ◽  
One Pot ◽  
Acid Catalyzed ◽  
Tandem Cyclization ◽  
First Time

Lewis acid-mediated one-pot tandem cyclization of o-QMs with arylsulfonyl hydrazides was described for the first time and the corresponding 3-sulfonylbenzofuran products were obtained in moderate to good yields.

scholarly journals Catalytic Performance of a Magnetic Core-Shell Iron(II) C-Scorpionate under Unconventional Oxidation Conditions

Nanomaterials ◽  
2020 ◽  
Vol 10 (11) ◽  
pp. 2111
Author(s):  
Inês A. S. Matias ◽  
Ana P. C. Ribeiro ◽  
Ana M. Ferraria ◽  
Ana M. Botelho do Rego ◽  
Luísa M. D. R. S. Martins
Keyword(s):  
Alternative Energy ◽  
Alcohol Oxidation ◽  
Catalytic Performance ◽  
Magnetic Core ◽  
Core Shell ◽  
Secondary Alcohols ◽  
Alternative Energy Sources ◽  
Metallic Complex ◽  
Shell Particles ◽  
First Time

For the first time, herein is reported the use of a magnetic core-shell support for a C-scorpionate metallic complex. The prepared hybrid material, that consists on the C-scorpionate iron(II) complex [FeCl2{κ3-HC(pz)3}] (pz, pyrazolyl) immobilized at magnetic core-shell particles (Fe3O4/TiO2), was tested as catalyst for the oxidation of secondary alcohols using the model substrate 1-phenylethanol. Moreover, the application of alternative energy sources (e.g., ultrasounds, microwaves, mechanical or thermal) for the peroxidative alcohol oxidation using the magnetic heterogenized iron(II) scorpionate led to different/unusual outcomes that are presented and discussed.

A New Catalytic System Consisting of Mo for Acetic Acid Synthesis from Methane and CO.

ChemInform ◽  
2003 ◽  
Vol 34 (46) ◽  
Author(s):  
Tsugio Kitamura ◽  
Yusuke Ishida ◽  
Teizo Yamaji ◽  
Yuzo Fujiwara
Keyword(s):  
Acetic Acid ◽  
Catalytic System ◽  
Acid Synthesis

Synthesis of 4-Aryldihydrocoumarins via a Sequential Michael Addition–Lactonization Route

2021 ◽  
Vol 08 ◽  
Author(s):  
Anshu Kumar Sinha ◽  
Chandra Mohan Srivastava ◽  
Gyandshwar K. Rao ◽  
Manvika Karnatak ◽  
Ved Prakash Verma ◽  
...  
Keyword(s):  
Catalytic System ◽  
Michael Addition ◽  
Title Compound ◽  
Sulfonic Acid ◽  
Metal Salt ◽  
The Other ◽  
One Pot ◽  
Sequential Reaction ◽  
Acid Catalyzed ◽  
Catalyst Efficiency

Background: Coumarin and its derivatives have attracted the attention of synthetic chemists due to their importance in pharmaceutical and medicinal chemistry. The acid-catalyzed cyclization route constitutes the method of choice to access these important compounds. Objective: In this paper, we have discussed the synthesis of 4-aryldihydrocoumarins via a one-pot p-sulfonic acid calix[4]arene catalyzed reaction. Method: The easily prepared calix[4]arene derivative catalyzes a sequential reaction involving Michael addition followed by intramolecular lactonization to afford the title compound in decent yield. Results: The described methodology is devoid of any metal salt, thus making it a very appealing protocol to safely produce dihydrocoumarins of pharmacological importance. Conclusion: The easy recovery, non-toxicity, and reusability of the catalytic system are some of the other advantages of our procedure. In addition, the catalyst efficiency is not compromised after its successive use in reactions.

Vanadium substituted heteropolyacids (H3+mPW12-mVmO40) encapsulated into Fe3O4@UiO-66 magnetic core-shell microspheres as brilliant catalysts for oxidative desulfurization under oxygen

2021 ◽  
Author(s):  
Chaowei Wang ◽  
Zhe Liu ◽  
Guangfa HU ◽  
Ruimin Gao ◽  
Jianshe Zhao
Keyword(s):  
Oxidative Desulfurization ◽  
Magnetic Core ◽  
Active Species ◽  
Core Shell ◽  
The Novel ◽  
One Pot ◽  
Keggin Type ◽  
Magnetic Fe3o4

In this study, the novel magnetic core-shell composites Fe3O4@UiO-66-HPA consisted of magnetic Fe3O4@UiO-66 and active species vanadium-substituted Keggin-type heteropolyacids supported by Zr-MOF were successfully prepared via one pot method and...

A New Catalytic System Consisting of Mo for Acetic Acid Synthesis from Methane and CO

2003 ◽  
Vol 76 (8) ◽  
pp. 1677-1678 ◽  
Author(s):  
Tsugio Kitamura ◽  
Yusuke Ishida ◽  
Teizo Yamaji ◽  
Yuzo Fujiwara
Keyword(s):  
Acetic Acid ◽  
Catalytic System ◽  
Acid Synthesis

Palladium-loaded magnetic core–shell porous carbon nanospheres derived from a metal–organic framework as a recyclable catalyst

RSC Advances ◽  
2015 ◽  
Vol 5 (101) ◽  
pp. 82666-82675 ◽  
Author(s):  
Chao Bao ◽  
Lincheng Zhou ◽  
Yanming Shao ◽  
Qiong Wu ◽  
Junjun Ma ◽  
...  
Keyword(s):  
Porous Carbon ◽  
Solvothermal Method ◽  
Metal Organic Framework ◽  
Magnetic Core ◽  
Nitrogen Atmosphere ◽  
Core Shell ◽  
Carbon Nanospheres ◽  
One Pot ◽  
Metal Organic ◽  
Porous Carbon Nanospheres

Pd-loaded magnetic porous carbon nanospheres (Fe3O4@MC-Pd) were prepared by annealing Fe3O4@MIL-100/PdCl2, which was fabricated through a facile one-pot solvothermal method, at 450 °C in nitrogen atmosphere.

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