Ionic liquids grafted onto graphene oxide as a new multifunctional heterogeneous catalyst and its application in the one-pot multi-component synthesis of hexahydroquinolines

2017 ◽  
Vol 41 (14) ◽  
pp. 6219-6225 ◽  
Author(s):  
Sara Sobhani ◽  
Farzaneh Zarifi ◽  
Jørgen Skibsted
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Ionic Liquids ◽  
Reaction Mechanism ◽  
Synergistic Effect ◽  
Heterogeneous Catalyst ◽  
Carboxylic Acids ◽  
One Pot ◽  
The One

The synergistic effect of ionic liquids and carboxylic acids in the reaction mechanism improved the catalytic activity of supported ILs.

Nanocrystalline Rhenium-doped TiO2: an efficient catalyst in the one-pot conversion of carbohydrates into levulinic acid. The synergistic effect between Brønsted and Lewis acid sites

2021 ◽  
Author(s):  
Sorin Avramescu ◽  
Cristian D. Ene ◽  
Madalina Ciobanu ◽  
Josefine Schnee ◽  
François Devred ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Synergistic Effect ◽  
Lewis Acid ◽  
Levulinic Acid ◽  
Acid Sites ◽  
Lewis Acid Sites ◽  
One Pot ◽  
Efficient Catalyst ◽  
The One ◽  
Brønsted And Lewis Acid

Catalytic activity of TiO2, 2%Re-TiO2 and 10%Re-TiO2 in the conversion of carbohydrates into levulinic acid under autoclave conditions was evaluated. These materials were prepared by aerogel method and characterized by...

scholarly journals Recyclable [Ce(l-Pro)2]2 (Oxa) used as Heterogeneous Catalyst: One-Pot Synthesis of 2,3-Dihydroquinazolin-4(1H)-ones in Ethanol

Synthesis ◽  
2017 ◽  
Vol 49 (23) ◽  
pp. 5143-5148 ◽  
Author(s):  
Ramesh Katla ◽  
Rakhi Chowrasia ◽  
Caren da Silva ◽  
Aline de Oliveira ◽  
Beatriz dos Santos ◽  
...  
Keyword(s):  
Catalytic Activity ◽  
Heterogeneous Catalyst ◽  
Significant Loss ◽  
One Pot ◽  
Mild Conditions ◽  
One Pot Synthesis ◽  
The One ◽  
Recyclable Heterogeneous Catalyst

[Ce(l-Pro)2]2 (Oxa) was used as a recyclable heterogeneous catalyst under mild conditions for the preparation of 2-aryl-2,3-dihydroquinazolin-4(1H)-one derivatives. The one-pot protocol proceeds in ethanol using anthranilamide with several aldehydes at 50–55 °C. The catalyst can be recycled and reused three cycles without significant loss of catalytic activity.

A structure–activity relationship study using DFT analysis of Bronsted–Lewis acidic ionic liquids and synergistic effect of dual acidity in one-pot conversion of glucose to value-added chemicals

2018 ◽  
Vol 42 (2) ◽  
pp. 1423-1430 ◽  
Author(s):  
Firdaus Parveen ◽  
Tanmoy Patra ◽  
Sreedevi Upadhyayula
Keyword(s):  
Ionic Liquids ◽  
Synergistic Effect ◽  
Formic Acid ◽  
Levulinic Acid ◽  
Value Added ◽  
One Pot ◽  
Structure Activity ◽  
Acidic Ionic Liquids ◽  
Commercially Important ◽  
Relationship Study

The catalytic conversion of biomass-derived carbohydrates to value-added chemicals, such as 5-hydroxymethylfurfural, levulinic acid, and formic acid, is a commercially important reaction and requires the use of both Lewis and Bronsted acids.

scholarly journals One-pot three-component tandem annulation of 4-hydroxycoumarine with aldehyde and aromatic amines using graphene oxide as an efficient catalyst

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Rabindranath Singha ◽  
Aminul Islam ◽  
Pranab Ghosh
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Aromatic Amines ◽  
Significant Loss ◽  
Solvent Free ◽  
One Pot ◽  
Efficient Catalyst ◽  
New Class ◽  
Broad Scope ◽  
Plausible Mechanism

AbstractA convenient and efficient solvent-free, facile, one-pot three-component graphene oxide catalysed approach has been described for the synthesis of chromeno-[4,3-b]quinolin-6-one derivatives from 4-hydroxycoumarin with aldehydes and aromatic amines. Graphene oxide (GO) has proved to be a new class of heterogeneous carbocatalyst which could be easily recovered and reused up to 5th run without significant loss of its catalytic activity. A broad scope of substrate applicability is offered and a plausible mechanism is also suggested for this developed protocol.

Sulfated Tin Oxide: A Convenient Heterogeneous Catalyst for the Synthesis of 4-Arylmethylidene-3-substituted-isoxazol-5(4H)-ones

2021 ◽  
Vol 18 ◽  
Author(s):  
Nitishkumar S. Kaminwar ◽  
Sunil U. Tekale ◽  
Srinivas L. Nakkalwar ◽  
Rajendra P. Pawar
Keyword(s):  
Heterogeneous Catalyst ◽  
Tin Oxide ◽  
Heterocyclic Compounds ◽  
Biological Activities ◽  
Hydroxylamine Hydrochloride ◽  
One Pot ◽  
Easy Method ◽  
Three Component Reaction ◽  
Wide Range ◽  
The One

: Synthesis of isoxazole structural heterocyclic compounds is important due to their wide range of biological activities. In the present article, we report a convenient and easy method for the synthesis of 4-arylmethylidene-3-substituted-isoxazol-5(4H)-ones by the one-pot three-component reaction of aldehydes, β-keto ester, and hydroxylamine hydrochloride cat-alyzed by sulfated tin oxide as a heterogeneous catalyst.

scholarly journals Terpyridine-based Pd(ii)/Ni(ii) organometallic framework nano-sheets supported on graphene oxide—investigating the fabrication, tuning of catalytic properties and synergetic effects

RSC Advances ◽  
2020 ◽  
Vol 10 (39) ◽  
pp. 23080-23090 ◽  
Author(s):  
Ruirui Ren ◽  
Sa Bi ◽  
Linhong Wang ◽  
Wuduo Zhao ◽  
Donghui Wei ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Catalytic Activity ◽  
Synergistic Effect ◽  
Catalytic Properties ◽  
Synergetic Effects

The synergistic effect between Ni and Pd atom was the crucial factor for enhancing catalytic activity.

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