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Etherification of Hydroxymethylfurfural with Preyssler Heteropolyacids Immobilized on Magnetic Composites
(Wiley Blackwell Publishing, Inc, 2018-05)
A thermodynamic study about the stability of intermediates in the reaction of 5-hydroxymethylfurfural (HMF) over Preyssler heteropolyacids (HPA-Preyssler) was performed to explain the self-etherification or oxidation of ...
Selective Catalytic Dehydration of Xylose to Furfural and Fructose and Glucose to 5‐Hydroximethylfurfural (HMF) Using Preyssler Heteropolyacid
(Wiley-VCH, 2020-04)
Catalytic dehydration of xylose to yield furfural was studied bytesting different heteropolyacid-type catalysts. Preyssler hetero-polyacid (HPA-Preyssler) (H 14 [NaP 5 W 30 O 110 ]) was the mostefficient. Under the optimal ...
Novel bifunctional mesoporous catalysts based on preyssler heteropolyacids for green pyrrole derivative synthesis
(Molecular Diversity Preservation International, 2018-10-26)
In this paper, we report the synthesis of Preyssler heteropolyacids supported on mesoporous alumina in order to obtain materials with acid–base properties. A series of pyrrole derivatives were synthesized using a suitable ...
Simple and ecofriendly synthesis of dihydropyrimidinones (thiones), dihydropyridines, and pyridines using 3-formylchromones as substrates assisted by a recyclable Preyssler heteropolyacid
(John Wiley & Sons Inc, 2016-09-13)
Several dihydropyrimidinones/thiones, 1,4-dihydropyridines, and pyridine derivatives were prepared in very good yields and purity values. The corresponding reactions were carried out by employing a bulk Preyssler heteropolyacid ...
Etherification of 5-hydroxymethylfurfural using a heteropolyacid supported on a silica matrix
(Elsevier, 2020-07-31)
In this work, Preyssler-type heteropolyacids and their silica-included counterparts were employed in the etherification reaction of HMF and n-BuOH. Materials were synthesized with a Preyssler acid load of 12.5% w/w using ...
A Solvent-free Method for Synthesis of Dihydroangelicins using Microwaves
(Bentham Science Publishers, 2017-04)
Background: Dihydrofurocoumarins are a large family of compounds, among them, dihydroangelicins and dihydropsoralens, are present in various plant species with varied biological activity. Several strategies have been ...
Synthesis of Biginelli adducts using a Preyssler heteropolyacid in silica matrix from biomass building block
(Elsevier Inc, 2018-12)
An efficient, suitable and high yielding method has been developed employing the use of the renewable platform molecule furfural for the synthesis of Biginelli derivatives via a three-component domino reaction through a ...