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Silica Sulfuric Acid: An Efficient and Versatile Acidic Catalyst for the Rapid and Ecofriendly Synthesis of 1,3,4‐Oxadiazoles at Ambient Temperature

✍ Scribed by Dabiri, Minoo; Salehi, Peyman; Baghbanzadeh, Mostafa; Zolfigol, Mohammad Ali; Bahramnejad, Mahboobeh


Book ID
120589653
Publisher
Taylor and Francis Group
Year
2007
Tongue
English
Weight
101 KB
Volume
37
Category
Article
ISSN
0039-7911

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📜 SIMILAR VOLUMES


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

Silica sulfuric acid as an efficient and
✍ Ahmad Shaabani; Abbas Rahmati 📂 Article 📅 2006 🏛 Elsevier Science 🌐 English ⚖ 104 KB

Trisubstituted imidazoles have been synthesized in high yields in the presence of silica sulfuric acid as a catalyst. The reaction is carried out in water, a very green solvent, under reflux conditions. The reaction work-up is simple and the catalyst is easily separated from the products by filtrati