Lewis Acid Catalyzed Conjugate Addition and the Formation of Heterocycles using Michael Acceptors under Solvent-Free Conditions
作者:Alemayehu Mekonnen、Rolf Carlson
DOI:10.1002/ejoc.200500923
日期:2006.4
Conjugate addition and conjugate-addition-initiated ringclosure (CAIRC) reactions of β-dicarbonylcompounds with Michael acceptors have been studied using several Lewis acid catalysts under solvent-free conditions. Excellent chemoselectivity was obtained when various Michael acceptors were treated with several β-dicarbonylcompounds. On the other hand, 2-bromo-2-cyclopentenone and 3-bromo-3-vinyl