Construction of 5,6-Ring-Fused 2-Pyridones: An Effective Annulation Tactic Achieved in Water
作者:Amos Smith、Onur Atasoylu、Douglas Beshore
DOI:10.1055/s-0029-1217749
日期:2009.10
An efficient protocol to annulate the 5,6-fused 2-pyridone ring system, exploiting a tandem condensation of propiolamide and cyclic β-keto methyl esters in water, followed by acid- or base-promoted intramolecular ring closure and decarboxylation, has been developed.