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Brønsted Acidic Ionic Liquid: An Efficient and Reusable Catalyst for the Synthesis of 3,4‐Dihydropyrimidin‐2(1H)‐ones

✍ Scribed by Zheng, Renwei; Wang, Xiaoxia; Xu, Hui; Du, Jingxing


Book ID
115483336
Publisher
Taylor and Francis Group
Year
2006
Tongue
English
Weight
118 KB
Volume
36
Category
Article
ISSN
0039-7911

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✍ Peyman Salehi; Minoo Dabiri; Mohammad Ali Zolfigol; Mohammad Ali Bodaghi Fard 📂 Article 📅 2003 🏛 Elsevier Science 🌐 French ⚖ 91 KB

Silica sulfuric acid efficiently catalyzes the three-component Biginelli reaction between an aldehyde, a b-dicarbonyl compound and urea or thiourea in refluxing ethanol to afford the corresponding dihydropyrimidinones in high yields. The catalyst is reusable and can be applied several times without