ChemInform Abstract: Wells-Dawson Heteropolyacid Supported on Silica: A Highly Efficient Catalyst for Synthesis of 2,4,5-Trisubstituted and 1,2,4,5-Tetrasubstituted Imidazoles

Autor: Zahra Alimohammadi, Mostafa M. Amini, Ali Reza Karimi
Rok vydání: 2011
Předmět:
Zdroj: ChemInform. 42
ISSN: 0931-7597
DOI: 10.1002/chin.201115131
Popis: The multicomponent cyclocondensation of benzil with aromatic aldehydes, an amine and ammonium acetate (or ammonium acetate alone) is efficiently catalyzed by SiO2-supported Wells—Dawson heteropolyacid to give the polysubstituted imidazole derivatives (IV) and (VI) in high yields.
Databáze: OpenAIRE