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Bi(TFA)3 immobilized in [nbpy]FeCl4: An efficient catalyst system for the one-pot synthesis of 4,6-diarylpyrimidin-2(1H)-ones

โœ Scribed by Ahmad R. Khosropour; Iraj Mohammadpoor-Baltork; Hamid Ghorbankhani


Book ID
119215550
Publisher
Elsevier Science
Year
2006
Tongue
English
Weight
100 KB
Volume
7
Category
Article
ISSN
1566-7367

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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