scholarly journals TBAB-Catalyzed 1,6-Conjugate Sulfonylation of para-Quinone Methides: A Highly Efficient Approach to Unsymmetrical gem-Diarylmethyl Sulfones in Water

Molecules ◽  
2020 ◽  
Vol 25 (3) ◽  
pp. 539 ◽  
Author(s):  
Zhang-Qin Liu ◽  
Peng-Sheng You ◽  
Liang-Dong Zhang ◽  
Da-Qing Liu ◽  
Sheng-Shu Liu ◽  
...  
Keyword(s):  
Functional Group ◽  
Ammonium Bromide ◽  
Quinone Methides ◽  
Efficient Approach ◽  
Tetrabutyl Ammonium Bromide ◽  
Highly Efficient ◽  
Tetrabutyl Ammonium ◽  
Efficient Route ◽  
Addition Pathway

A highly efficient sulfonylation of para-quinone methides with sulfonyl hydrazines in water has been developed on the basis of the mode involving a tetrabutyl ammonium bromide (TBAB)-promoted sulfa-1,6-conjugated addition pathway. This reaction provides a green and sustainable method to synthesize various unsymmetrical diarylmethyl sulfones, showing good functional group tolerance, scalability, and regioselectivity. Further transformation of the resulting diarylmethyl sulfones provides an efficient route to some functionalized molecules.

Tetrabutyl ammonium bromide-mediated benzylation of phenols in water under mild condition

Tetrahedron ◽  
2014 ◽  
Vol 70 (16) ◽  
pp. 2669-2673 ◽  
Author(s):  
Hailei Wang ◽  
Yuping Ma ◽  
Heng Tian ◽  
Ajuan Yu ◽  
Junbiao Chang ◽  
...  
Keyword(s):  
Mild Condition ◽  
Ammonium Bromide ◽  
Tetrabutyl Ammonium Bromide ◽  
Tetrabutyl Ammonium

Preparation of TiO2/ACF in Caprolactam Tetrabutyl Ammonium Bromide Ionic Liquid

2013 ◽  
Vol 404 ◽  
pp. 132-136
Author(s):  
Jing Han
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Fiber Surface ◽  
Preparation Condition ◽  
Activated Carbon Fiber ◽  
Ammonium Bromide ◽  
X Ray Diffraction ◽  
Tetrabutyl Ammonium Bromide ◽  
Preparation Conditions ◽  
Tetrabutyl Ammonium

To explore environmentally benign method for preparing TiO2, composite photocatalysts TiO2 immobilized on activated carbon fibers (TiO2/ACF) were prepared in caprolactam tetrabutyl ammonium bromide ionic liquid (CPL-TBAB ILs). The TiO2/ACF composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM).The effects of different preparation condition were discussed by degradation of methyl orange (MO). The results showed that nanoTiO2 particles of mixed grain phase were well deposited on the activated carbon fiber surface. 96% of MO was removed under optimal preparation conditions.

Absorption and Oxidation of H2S in Caprolactam Tetrabutyl Ammonium Bromide Ionic Liquid

2011 ◽  
Vol 25 (1) ◽  
pp. 159-161 ◽  
Author(s):  
Bin Guo ◽  
Erhong Duan ◽  
Yongfei Zhong ◽  
Liang Gao ◽  
Xuesong Zhang ◽  
...  
Keyword(s):  
Ionic Liquid ◽  
Ammonium Bromide ◽  
Tetrabutyl Ammonium Bromide ◽  
Tetrabutyl Ammonium

Efficient Synthesis of Novel Thioureidobenzamido Alkyl Naphthols in Molten Tetrabutylammonium Bromide

2019 ◽  
Vol 16 (11) ◽  
pp. 906-910
Author(s):  
Arman Shokooh Saljooghi ◽  
Hojatollah Khabazzadeh ◽  
Moj Khaleghi
Keyword(s):  
Molten Salt ◽  
Organic Solvents ◽  
Multicomponent Reactions ◽  
Tetrabutylammonium Bromide ◽  
Aromatic Aldehydes ◽  
Ammonium Bromide ◽  
Efficient Synthesis ◽  
Tetrabutyl Ammonium Bromide ◽  
Tetrabutyl Ammonium

A new series of benzamido alkyl naphthols were synthesized from the multi-component reaction of 4-(3′-methylthioureido)benzamide, aromatic aldehydes and 2-naphthol. Molten tetrabutyl ammonium bromide was used as a very efficient medium for this reaction while the use of common organic solvents gave no or poor yields. This method is an interesting instance of using molten salt as a medium in multicomponent reactions.

Characterization of TiO2/ACF Preparation in Caprolactam Tetrabutyl Ammonium Bromide Ionic Liquid

2013 ◽  
Vol 750-752 ◽  
pp. 1864-1867 ◽  
Author(s):  
Jing Han ◽  
Chun Jing Li
Keyword(s):  
Ionic Liquid ◽  
Activated Carbon ◽  
Fiber Surface ◽  
Activated Carbon Fiber ◽  
Ammonium Bromide ◽  
X Ray Diffraction ◽  
Tetrabutyl Ammonium Bromide ◽  
Tetrabutyl Ammonium ◽  
Composite Photocatalysts

To explore environmentally benign method for preparing TiO2, composite photocatalysts TiO2 immobilized on activated carbon fibers (TiO2/ACF) were prepared in caprolactam tetrabutyl ammonium bromide ionic liquid (CPL-TBAB ILs). The TiO2/ACF composites were characterized by X-ray diffraction (XRD) and scanning electron microscopy (SEM). The results showed that nanoTiO2 particles of mixed grain phase were well deposited on the activated carbon fiber surface.

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