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Tungstophosphoric acid/zirconia composites prepared by the sol–gel method: An efficient and recyclable green catalyst for the one-pot synthesis of 14-aryl-14H-dibenzo[a,j]xanthenes

✍ Scribed by Toa S. Rivera; Alexis Sosa; Gustavo P. Romanelli; Mirta N. Blanco; Luis R. Pizzio


Book ID
119190976
Publisher
Elsevier Science
Year
2012
Tongue
English
Weight
412 KB
Volume
443-444
Category
Article
ISSN
0926-860X

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✍ Ali Rahmatpour; Jamal Aalaie 📂 Article 📅 2010 🏛 John Wiley and Sons 🌐 English ⚖ 77 KB 👁 1 views

## Abstract A new, mild, and efficient method has been developed for the one‐pot synthesis of 14‐aryl or alkyl‐14H‐dibenzo[__a,j__]xanthenes by condensation of 2‐naphthol and aryl or alkyl aldehydes in the presence of a catalytic amount of cross‐linked polystyrene‐supported aluminum chloride (PS/Al