scholarly journals Catalytic oxidation of glycerol to tartronic acid over Au/HY catalyst under mild conditions

2014 ◽  
Vol 35 (10) ◽  
pp. 1653-1660 ◽  
Author(s):  
Jiaying Cai ◽  
Hong Ma ◽  
Junjie Zhang ◽  
Zhongtian Du ◽  
Yizheng Huang ◽  
...  
Keyword(s):  
Catalytic Oxidation ◽  
Mild Conditions ◽  
Tartronic Acid

Oxidation of 2-methylpyrroles with perchlorinated iron(III) metalloporphyrin catalysts: a versatile synthesis of symmetric and asymmetric dipyrromethanes

1998 ◽  
Vol 76 (10) ◽  
pp. 1467-1473 ◽  
Author(s):  
Veranja Karunaratne ◽  
David Dolphin
Keyword(s):  
Catalytic Oxidation ◽  
Allylic Alcohols ◽  
The Novel ◽  
Efficient Synthesis ◽  
Mild Conditions ◽  
Metalloporphyrin Catalysts

A variety of substituted 2-methylpyrroles (3-8) were oxidized using the metalloporphyrin catalysts iron(III) meso-tetra(2,6-dichloro-3-sulphonatophenyl)-β-octachloroporphyrin chloride 1 and iron(III) meso-tetra(2,6-dichlorophenyl)-β-octachloroporphyrin chloride 2 under very mild conditions. Treatment of the resulting allylic alcohols 3a-8a with α-free pyrroles 9 and 10 resulted in a very efficient synthesis of the corresponding dipyrromethanes 3b-8b and 3c-8c. Furthermore, the above allylic alcohols when treated with furfurylamine produced the novel (2-furylmethyl)-2-pyrrolylmethylamines 3d-8d.Key words: catalytic oxidation, metalloporphyrins, pyrroles, dipyrromethanes, polyhalogenated porphyrins.

scholarly journals The Chemoselective Reduction of Isoxazolineγ-Lactams Through Iminium Aza-Diels-Alder Reactions: A Short-Cut Synthesis of Aminols as Valuable Intermediates towards Nucleoside Derivatives

2012 ◽  
Vol 2012 ◽  
pp. 1-10
Author(s):  
Misal Giuseppe Memeo ◽  
Mariella Mella ◽  
Paolo Quadrelli
Keyword(s):  
Catalytic Oxidation ◽  
Ring Opening ◽  
Diels Alder ◽  
Mild Conditions ◽  
Nucleoside Synthesis ◽  
Conformationally Locked

Isoxazolineγ-lactams are prepared starting from the regioisomeric cycloadducts of benzonitrile oxide to theN-alkyl 2-azanorbornenes taking advantage of the efficient catalytic oxidation by RuO4. The reduction of the amide groups is easily conducted in the presence of LiAlH4under mild conditions, which allowed for the chemoselective reduction of the amide moiety followed by ring opening to afford the desired conformationally locked isoxazoline-carbocyclic aminols, as valuable intermediates for nucleoside synthesis.

Catalytic Oxidation of Alcohols with Polymer-Supported Ruthenium Complex under Mild Conditions.

ChemInform ◽  
2006 ◽  
Vol 37 (15) ◽  
Author(s):  
Qiao-xiang Kang ◽  
Ju-jie Luo ◽  
Yan-bin Bai ◽  
Zhi-wang Yang ◽  
Zi-qiang Lei
Keyword(s):  
Catalytic Oxidation ◽  
Ruthenium Complex ◽  
Mild Conditions ◽  
Oxidation Of Alcohols ◽  
Polymer Supported

Extraction combined catalytic oxidation desulfurization of petcoke in ionic liquid under mild conditions

Fuel ◽  
2020 ◽  
Vol 260 ◽  
pp. 116200 ◽  
Author(s):  
Hui Liu ◽  
Huanhuan Xu ◽  
Mingqing Hua ◽  
LinLin Chen ◽  
Yanchen Wei ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Catalytic Oxidation ◽  
Mild Conditions

Biomimetic flavin-catalysed reactions for organic synthesis

2015 ◽  
Vol 13 (28) ◽  
pp. 7599-7613 ◽  
Author(s):  
H. Iida ◽  
Y. Imada ◽  
S.-I. Murahashi
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Organic Synthesis ◽  
Environmentally Benign ◽  
Wide Scope ◽  
Biomimetic Catalysts ◽  
Mild Conditions ◽  
Related Compounds

Using simple riboflavin related compounds as biomimetic catalysts, catalytic oxidation of various substrates with hydrogen peroxide or molecular oxygen can be performed selectively under mild conditions. The principle of these reactions is fundamental and will provide a wide scope for environmentally benign future practical methods.

Reactions of Ethylene with Rhodium (III) Chloride. Part IV. Relative Activity of Tetra-, Penta-, and Hexa-chlororhodate(III) Complexes for the Oxidation of Ethylene to Acetaldehyde in Aqueous Acid Solutions

1972 ◽  
Vol 50 (11) ◽  
pp. 1708-1712 ◽  
Author(s):  
B. R. James ◽  
M. Kastner
Keyword(s):  
Catalytic Oxidation ◽  
Relative Activity ◽  
Acid Solutions ◽  
Chloride Complexes ◽  
Chloro Complexes ◽  
Mild Conditions ◽  
Aqueous Acid ◽  
Coordinated Water

The catalytic oxidation of ethylene to acetaldehyde using the rhodium(III) chloride complexes, [Formula: see text] in the presence of iron(III) has been studied kinetically in aqueous acid solutions under mild conditions.[Formula: see text] is inactive due to the absence of a coordinated water (hydroxide) ligand. Solutions containing tetrachloro species are generally more reactive than those containing pentachloro species because of the presence of a greater concentration of highly reactive hydroxy species. The neutral and cationic chloro-complexes are inactive due to their substitution inertness.

scholarly journals K-10 montmorillonite: An efficient and reusable catalyst for selective oxidation of aldehydes in the presence of dioxygen

2019 ◽  
Vol 8 (5) ◽  
pp. 380-389
Author(s):  
Ikram EL Amrani ◽  
Ahmed Atlamsani
Keyword(s):  
Catalytic Activity ◽  
Catalytic Oxidation ◽  
Molecular Oxygen ◽  
Selective Oxidation ◽  
Reusable Catalyst ◽  
Good Activity ◽  
Mild Conditions ◽  
Catalyst Temperature ◽  
Clay Catalyst ◽  
Excellent Selectivity

A commercial montmorillonite clay catalyst, K-10 montmorillonite, was tested for catalytic oxidation of aldehydes in the presence of molecular oxygen under mild conditions. K-10 montmorillonite catalysed the oxidation of aldehydes with good activity and excellent selectivity toward the formation of the corresponding acids. The effects of the amount of catalyst, temperature and solvent on the catalytic activity were investigated. Remarkably, this catalyst was reusable without any appreciable loss in activity and selectivity.

scholarly journals Liquid-Phase Catalytic Oxidation of Limonene to Carvone over ZIF-67(Co)

Catalysts ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. 374 ◽  
Author(s):  
Yizhou Li ◽  
Yepeng Yang ◽  
Daomei Chen ◽  
Zhifang Luo ◽  
Wei Wang ◽  
...  
Keyword(s):  
Liquid Phase ◽  
Catalytic Oxidation ◽  
Heterogeneous Catalyst ◽  
Product Selectivity ◽  
X Ray Diffraction ◽  
Zeolitic Imidazolate Framework ◽  
X Ray ◽  
Mild Conditions ◽  
Before And After ◽  
Diffraction Patterns

Liquid-phase catalytic oxidation of limonene was carried out under mild conditions, and carvone was produced in the presence of ZIF-67(Co), cobalt based zeolitic imidazolate framework, as catalyst, using t-butyl hydroperoxide (t-BHP) as oxidant and benzene as solvent. As a heterogeneous catalyst, the zeolitic imidazolate framework ZIF-67(Co) exhibited reasonable substrate–product selectivity (55.4%) and conversion (29.8%). Finally, the X-ray diffraction patterns of the catalyst before and after proved that ZIF-67(Co) acted as a heterogeneous catalyst, and can be reused without losing its activity to a great extent.

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