Acylation of aromatic compounds by acid anhydrides using Preyssler's anion [NaP5W30O110]14- and heteropolyacids as green catalysts

• Authors: Ali Gharib , Manouchehr Jahangir , J. Scheeren
• Languages of publication: EN

Abstracts

EN

The Preyssler, Wells-Dowson and Keggin heteropolyacids are efficient and eco-friendly solid acid catalysts for the acylation of electron-rich aromatic compounds with acid anhydrides. The performance of different forms of heteropolyacids was compared. In all the cases, the best results were obtained using the Preyssler heteropolyacid as the catalyst. In the presence of 25 mol% (with respect to H+ equivalency) Preyssler catalyst, highly para-selective acetylation of anisole occurs using two equivalents of acetic anhydride, in 15 min at room temperature. The isolated yield of the p-methoxyacetophenone product is 98%.

Keywords

EN

Acylation; Preyssler; Anhydride; Heteropolyacids; Catalyst; Aromatic compounds

• Journal: Polish Journal of Chemical Technology
• Year: 2011
• Volume: 13
• Issue: 2
• Pages: 11-17

Dates

published

1 - 1 - 2011

online

16 - 6 - 2011

Contributors

author

Ali Gharib

author

Manouchehr Jahangir

• Department of Chemistry, Islamic Azad University, Mashhad, IRAN

author

J. Scheeren

• Cluster for Molecular Chemistry, Department of Organic Chemistry, Radboud University Nijmegen, The Netherlands

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Identifiers

DOI

10.2478/v10026-011-0017-6