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Covalently anchored sulfonic acid onto silica as an efficient and recoverable interphase catalyst for the synthesis of 3,4-dihydropyrimidinones/thiones

✍ Scribed by Raman Gupta; Satya Paul; Rajive Gupta


Book ID
108212841
Publisher
Elsevier Science
Year
2007
Tongue
English
Weight
306 KB
Volume
266
Category
Article
ISSN
1381-1169

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Silica sulfuric acid as an efficient and
✍ Ahmad Shaabani; Abbas Rahmati πŸ“‚ Article πŸ“… 2006 πŸ› Elsevier Science 🌐 English βš– 104 KB

Trisubstituted imidazoles have been synthesized in high yields in the presence of silica sulfuric acid as a catalyst. The reaction is carried out in water, a very green solvent, under reflux conditions. The reaction work-up is simple and the catalyst is easily separated from the products by filtrati