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Synthesis of 2-Aryl-1-arylmethyl-1H-1,3-benzimidazole Derivatives Using Silica-bonded Propyl-S-sulfonic Acid as Recyclable Solid Acid Catalyst

✍ Scribed by Sayed Mohammad Ghaem Ahmadi-Ana; Mojtaba Baghernejad; Khodabakhsh Niknam

Book ID: 112060522
Publisher: John Wiley and Sons
Year: 2012
Tongue: English
Weight: 576 KB
Volume: 30
Category: Article
ISSN: 0256-7660
DOI: 10.1002/cjoc.201280016

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## Abstract Silica phenyl sulfonic acid (SPSA) was prepared and effectively used in the one‐pot synthesis of 2‐aryl‐1‐arylmethyl‐1H‐1,3‐benzimidazoles from __o__‐phenylenediamine with aldehydes in water in the presence of tetrabutyl ammonium bromide with good to high yield. Also, SPSA was used as a