ChemInform Abstract: Regiospecific, One-Pot, and Pseudo-Five-Component Synthesis of 6,6′-(Arylmethylene)bis(2-(tert-butyl)4-methylphenol) Antioxidants Using Highly Sulfonated Multi-Walled Carbon Nanotubes under Solvent-Free Conditions.

This is the first report of an innovative, one-pot, pseudo-five-component, and solvent-free synthesis of 6,6′-(arylmethylene)bis(2-(tert-butyl)4-methylphenol) antioxidants from p-cresol, methyl tert-butyl ether, and aldehydes in the presence of sulfonated multi-walled carbon nanotubes (MWCNTs-SO3H) as heterogeneous, robust, and reusable catalysts under solvent-free conditions. MWCNTs-SO3H was prepared and characterized by some microscopic and spectroscopic techniques including scanning electron microscopy, transmission electron microscopy, Fourier transform infrared spectroscopy, Raman spectroscopy, dispersibility in different solvent, and thermogravimetric analysis (one functionality every approximately five carbon atoms). The acidity of the catalyst was measured by acid–base titration (1.80 mmol g−1). This reaction proceeds smoothly to give the products in good yields. The catalyst was reused several times without efficient loss of its activity for the preparation of 6,6′-(arylmethylene)bis(2-(tert-butyl)4-methylphenol) antioxidants. In addition, high yields of the products and solvent-free and nontoxicity of the catalyst are other worthwhile advantages of the present method.

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ChemInform Abstract: Synthesis, Characterization and Catalytic Activity of Sulfonated Multi-Walled Carbon Nanotubes as Heterogeneous, Robust and Reusable Catalysts for the Synthesis of Bisphenolic Antioxidants under Solvent-Free Conditions.

ChemInform ◽

10.1002/chin.201408099 ◽

2014 ◽

Vol 45 (8) ◽

pp. no-no

Author(s):

Reza Fareghi-Alamdari ◽

Mohsen Golestanzadeh ◽

Farima Agend ◽

Negar Zekri

Keyword(s):

Carbon Nanotubes ◽

Catalytic Activity ◽

Solvent Free ◽

Solvent Free Conditions ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes

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Application of highly sulfonated single-walled carbon nanotubes: An efficient heterogeneous catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes under solvent-free conditions

Comptes Rendus Chimie ◽

10.1016/j.crci.2013.02.005 ◽

2013 ◽

Vol 16 (10) ◽

pp. 878-887 ◽

Cited By ~ 18

Author(s):

Reza Fareghi-Alamdari ◽

Mohsen Golestanzadeh ◽

Farima Agend ◽

Negar Zekri

Keyword(s):

Carbon Nanotubes ◽

Heterogeneous Catalyst ◽

Single Walled Carbon Nanotubes ◽

Solvent Free ◽

One Pot ◽

Single Walled Carbon ◽

Solvent Free Conditions ◽

The One ◽

Walled Carbon Nanotubes ◽

Efficient Heterogeneous Catalyst

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Solvent-free synthesis of trisphenols as starting precursors for the synthesis of calix[4]arenes using sulfonated multi-walled carbon nanotubes

New Journal of Chemistry ◽

10.1039/c5nj03136b ◽

2016 ◽

Vol 40 (4) ◽

pp. 3400-3412 ◽

Cited By ~ 6

Author(s):

Reza Fareghi-Alamdari ◽

Mohsen Golestanzadeh ◽

Negar Zekri

Keyword(s):

Carbon Nanotubes ◽

Solvent Free ◽

Phenol Derivatives ◽

Solvent Free Conditions ◽

Multi Walled Carbon Nanotubes ◽

Walled Carbon Nanotubes ◽

Solvent Free Synthesis

The condensation of phenol derivatives with 2,6-bis(hydroxymethyl)phenols is reported using SO3H@MWCNTs under solvent-free conditions as precursors for the synthesis of calix[4]arenes.

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