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BF3·SiO2is a simple and efficient Lewis acid catalyst for the one-pot synthesis of polyfunctionalized piperidin-4-ones

✍ Scribed by Someshwar D. Dindulkar; Paramasivam Parthiban; Yeon Tae Jeong


Book ID
106214707
Publisher
Springer Vienna
Year
2011
Tongue
English
Weight
260 KB
Volume
143
Category
Article
ISSN
0026-9247

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Silica sulfuric acid: an efficient and r
✍ 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