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Xanthan Sulfuric Acid: A New and Efficient Biosupported Solid Acid Catalyst for the Synthesis of 3,4-Dihydropyrimidin-2(1H)-Ones

โœ Scribed by Kuarm, B. Suresh; Madhav, J. Venu; Laxmi, S. Vijaya; Rajitha, B.


Book ID
126669623
Publisher
Taylor and Francis Group
Year
2011
Tongue
English
Weight
169 KB
Volume
42
Category
Article
ISSN
0039-7911

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Silica sulfuric acid: an efficient and r
โœ Peyman Salehi; Minoo Dabiri; Mohammad Ali Zolfigol; Mohammad Ali Bodaghi Fard ๐Ÿ“‚ Article ๐Ÿ“… 2003 ๐Ÿ› Elsevier Science ๐ŸŒ French โš– 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