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Cellulose Sulfuric Acid: An Efficient Biodegradable and Recyclable Solid Acid Catalyst for the One-Pot Synthesis of 3,4-Dihydropyrimidine-2(1H)-ones

โœ Scribed by Reddy, P. Narsimha; Reddy, Y. Thirupathi; Reddy, M. Nikhil; Rajitha, B.; Crooks, Peter


Book ID
115459720
Publisher
Taylor and Francis Group
Year
2009
Tongue
English
Weight
97 KB
Volume
39
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