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Camerino, Italy

Lanari D.,University of Perugia | Ballini R.,Green Chemistry Group | Bonollo S.,University of Perugia | Palmieri A.,Green Chemistry Group | And 2 more authors.
Green Chemistry | Year: 2011

JandaJel, with its greater spacing between the linear polymeric chains compared to that of polystyrene matrices, is a very efficient support for improving the catalytic efficiency of TBD under SolFC. This journal is © The Royal Society of Chemistry. Source


Ballini R.,Green Chemistry Group | Gabrielli S.,Green Chemistry Group | Palmieri A.,Green Chemistry Group
Synlett | Year: 2010

The reaction of α-functionalized carbonyl derivatives with β-nitroacrylates, catalyzed by acidic alumina and in the absence of solvent, allows the one-pot synthesis of tetrasubstituted furan derivatives, in which at least two powerful functionalities are present in the 3-and 4-positions. © Georg Thieme Verlag KG. Source


Rancan E.,University of Venice | Rancan E.,Green Chemistry Group | Arico F.,Green Chemistry Group | Arico F.,University of Venice | And 6 more authors.
Catalysis Letters | Year: 2015

A series of 2-methyl-benzoxazoles have been synthesized starting from 2-hydroxy-acetophenones via a one-pot three steps reaction. Hydroxylamonium salt has been used as amidation agent. The reaction occurs with different anions, but the best results is achieved with hydroxylamonium hydrchloride. Despite the number of consecutive stages, the reaction is highly selective. Mild reaction conditions and various solvents can be used, but trifluoroacetic acid is the preferred. Almost, complete recovery of the trifluoroacetic acid can be achieved by vacuum distillation. The role of trifluoroacetic acid, as well as, of the hydroxylamonium salt suggests a cooperative effect leading to high selective formation of 2-methyl-benzoxazoles. Graphical Abstract: One-pot TFA catalyzed synthesis of benzoxazoles starting from 2-hydroxyacetophenones. (Chemical Equation Presented). © 2014 Springer Science+Business Media. Source


Rancan E.,University of Venice | Rancan E.,Green Chemistry Group | Arico F.,University of Venice | Arico F.,Green Chemistry Group | And 8 more authors.
Catalysis Communications | Year: 2014

High yielding amination of ketones and benzaldehyde in acid-less conditions has been conducted on several ketones to achieve amides and nitriles. The reactivity of the selected substrates showed to depend on both oximation and Beckmann rearrangement reaction rates. Oximation allows the in-situ production of hydrochloric acid that enables Beckmann rearrangement of the oxime to form the corresponding amide or nitrile. It is noteworthy that, using this one-pot synthetic approach, N-acetyl-4-aminophenol (acetaminophen drug), can be easily synthesized starting from 4-hydroxy-acetophenone in high yield. Acetanilide and ε-caprolactam can be also efficiently synthesized employing this synthetic procedure. © 2014 Elsevier B.V. Source


Arico F.,Green Chemistry Group | Arico F.,University of Venice | Quartarone G.,University of Venice | Quartarone G.,Green Chemistry Group | And 8 more authors.
Catalysis Communications | Year: 2014

High yielding one-pot oximation-Beckmann rearrangement of ketones to amides in ktrifluoroacetic acid has been conducted on several ketones and aldehydes. The substrate reactivity showed to depend on both oximation and Beckmann rearrangement reaction rate. In this synthetic procedure, trifluoroacetic acid acts as solvent, acid catalyst and organocatalyst and can be easily recycled. © 2014 Elsevier B.V. Source

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