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Silica nanoparticles immobilized benzoylthiourea ferrous complex as an efficient and reusable catalyst for one-pot synthesis of benzopyranopyrimidines

โœ Scribed by Amirnejat, Sara; Movahedi, Farnaz; Masrouri, Hassan; Mohadesi, Meysam; Kassaee, M.Z.


Book ID
120516447
Publisher
Elsevier Science
Year
2013
Tongue
English
Weight
736 KB
Volume
378
Category
Article
ISSN
1381-1169

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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