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

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.

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

The Scientific World JOURNAL ◽

10.1100/2012/643647 ◽

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.

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

ChemInform ◽

10.1002/chin.200615044 ◽

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

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Efficient pseudo five-component synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives promoted by a novel ionic liquid catalyst

Zeitschrift für Naturforschung B ◽

10.1515/znb-2017-0179 ◽

2018 ◽

Vol 73 (3-4) ◽

pp. 191-195 ◽

Cited By ~ 2

Author(s):

Zahra Abshirini ◽

Abdolkarim Zare

Keyword(s):

Ionic Liquid ◽

Disulfonic Acid ◽

Thermal Gravimetric ◽

One Pot ◽

Mild Conditions ◽

Acidic Ionic Liquid ◽

Brønsted Acidic Ionic Liquid ◽

The One ◽

C Nmr

AbstractIn this research, initial production and characterization of a novel Brønsted-acidic ionic liquid, namely,N,N,N′,N′-tetramethylethylenediaminium-N,N′-disulfonic acid hydrogen sulfate ([TMEDSA][HSO4]2), has been described (characterization was achieved using Fourier-transform infrared spectroscopy,1H nuclear magnetic resonance (NMR),13C NMR, and mass and thermal gravimetric spectra). Thereafter, utilization of [TMEDSA][HSO4]2as a highly effectual catalyst for the synthesis of 4,4′-(arylmethylene)-bis(3-methyl-1-phenyl-1H-pyrazol-5-ol) derivatives through the one-pot pseudo five-component reaction of phenylhydrazine (2 eq.) with ethyl acetoacetate (2 eq.) and arylaldehydes (1 eq.) in relatively mild conditions, has been reported.

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