scholarly journals Towards the Green Synthesis of Furfuryl Alcohol in A One-Pot System from Xylose: A Review

Catalysts ◽  
2020 ◽  
Vol 10 (10) ◽  
pp. 1101
Author(s):  
Gerardo Gómez Millán ◽  
Herbert Sixta
Keyword(s):  
Green Synthesis ◽  
Furfuryl Alcohol ◽  
The Novel ◽  
Economic Aspects ◽  
Complex Matrix ◽  
One Pot ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Production Concept ◽  
Biobased Economy

In the pursuit of establishing a sustainable biobased economy, valorization of lignocellulosic biomass is increasing its value as a feedstock. Nevertheless, to achieve the integrated biorefinery paradigm, the selective fractionation of its complex matrix to its single constituents must be complete. This review presents and examines the novel catalytic pathways to form furfuryl alcohol (FuOH) from xylose in a one-pot system. This production concept takes on chemical, thermochemical and biochemical transformations or a combination of them. Still, the bulk of the research is targeted to develop heterogeneous catalytic systems to synthesize FuOH from furfural and xylose. The present review includes an overview of the economic aspects to produce this platform chemical in an industrial manner. In the last section of this review, an outlook and summary of catalytic processes to produce FuOH are highlighted.

A copper(ii)–thioamide combination as a robust heterogeneous catalytic system for green synthesis of 1,4-disubstituted-1,2,3-triazoles under click conditions

RSC Advances ◽  
2015 ◽  
Vol 5 (95) ◽  
pp. 78038-78046 ◽  
Author(s):  
Zohreh Mirjafary ◽  
Leila Ahmadi ◽  
Masomeh Moradi ◽  
Hamid Saeidian
Keyword(s):  
Green Synthesis ◽  
Catalytic System ◽  
One Pot ◽  
Heterogeneous Catalytic ◽  
One Pot Synthesis ◽  
Heterogeneous Catalytic System

One-pot synthesis of 1,4-disubstituted-1,2,3-triazoles 3 using copper(ii)–thioamide combination was reported.

scholarly journals Recent Progresses in the Multicomponent Synthesis of Dihydropyridines by Applying Sustainable Catalysts Under Green Conditions

2021 ◽  
Vol 9 ◽  
Author(s):  
Immandhi Sai Sonali Anantha ◽  
Nagaraju Kerru ◽  
Suresh Maddila ◽  
Sreekantha B. Jonnalagadda
Keyword(s):  
Heterogeneous Catalysts ◽  
Reaction Times ◽  
Cost Effective ◽  
Multicomponent Synthesis ◽  
One Pot ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Significant Efficacy ◽  
Magnetic Silica ◽  
Active Methylene

The synthesis of dihydropyridines, valuable molecules with diverse therapeutic properties, using eco-friendly heterogeneous catalysts as a green alternative received significant consideration. By selecting appropriate precursors, these compounds can be readily modified to induce the desired properties in the target product. This review focused on synthesising diverse dihydropyridine derivatives in single-pot reactions using magnetic, silica, and zirconium-based heterogeneous catalytic systems. The monograph describes preparation techniques for various catalyst materials in detail. It covers facile and benign magnetic, silica, zirconium-based, and ionic liquid catalysts, exhibiting significant efficacy and consistently facilitating excellent yields in short reaction times and in a cost-effective way. Most of the designated protocols employ Hantzsch reactions involving substituted aldehydes, active methylene compounds, and ammonium acetate. These reactions presumably follow Knoevenagel condensation followed by Michael addition and intra-molecular cyclisation. The multicomponent one-pot protocols using green catalysts and solvents have admirably increased the product selectivity and yields while minimising the reaction time. These sustainable catalyst materials retain their viability for several cycles reducing the expenditure are eco-friendly.

scholarly journals A Novel Four-Component Reaction between Secondary Amines and Hydroxybenzaldehydes with Isocyanides in Water: An Efficient One-Pot and Green Synthesis of Benzo[b]furan Derivatives

2013 ◽  
Vol 2013 ◽  
pp. 1-5 ◽  
Author(s):  
Esmail Vessally ◽  
Ali Ramazani ◽  
Hana Shabrendi ◽  
Roghaie Ghadimi ◽  
Morteza Rouhani
Keyword(s):  
Green Synthesis ◽  
Secondary Amine ◽  
Room Temperature ◽  
Secondary Amines ◽  
The Novel ◽  
One Pot ◽  
Furan Derivatives

The novel benzo[b]furan derivatives,7a–i, were synthesized and characterized by Ugi four-component reaction between 2-hydroxybenzaldehyde derivative1, a secondary amine2, and an isocyanide3in water. Those reactions were carried out at room temperature with moderate to good yields in one pot.

Hydrogen peroxide decomposition on a two-component CuO-Cr2O3 catalyst

1988 ◽  
Vol 53 (8) ◽  
pp. 1636-1646 ◽  
Author(s):  
Viliam Múčka ◽  
Kamil Lang
Keyword(s):  
Hydrogen Peroxide ◽  
Catalytic Activity ◽  
Extreme Values ◽  
Catalytic Properties ◽  
Active Components ◽  
Catalytic Systems ◽  
Heterogeneous Catalytic ◽  
Peroxide Decomposition ◽  
Two Component ◽  
Catalytically Active

Some physical and catalytic properties of the two-component copper(II)oxide-chromium(III)oxide catalyst with different content of both components were studied using the decomposition of the aqueous solution of hydrogen peroxide as a testing reaction. It has been found that along to both basic components, the system under study contains also the spinel structure CuCr2O4, chromate washable by water and hexavalent ions of chromium unwashable by water. The soluble chromate is catalytically active. During the first period of the reaction the equilibrium is being established in both homogeneous and heterogeneous catalytic systems. The catalytic activity as well as the specific surface area of the washed solid is a non-monotonous function of its composition. It seems highly probable that the extreme values of both these quantities are not connected with the detected admixtures in the catalytic system. The system under study is very insensitive with regard to the applied doses of gamma radiation. Its catalytic properties are changed rather significantly after the thermal treatment and particularly after the partial reduction to low degree by hydrogen. The observed changes of the catalytic activity of the system under study are very probably in connection with the changes of the valence state of the catalytically active components of the catalyst.

scholarly journals Ultrasound-assisted PSA catalyzed one-pot green synthesis of pyrazolyl pyrrole derivatives

2020 ◽  
Author(s):  
G. Mohan ◽  
N. Saichaitanya ◽  
S. Murali ◽  
N. Bakthavatchala Reddy ◽  
Grigory V. Zyryanov ◽  
...  
Keyword(s):  
Green Synthesis ◽  
One Pot ◽  
Pyrrole Derivatives ◽  
Ultrasound Assisted
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