Intramolecular 1,6-Addition to 2-Pyridones. Mechanism and Synthetic Scope.
作者:Timothy Gallagher、Ian Derrick、Patrick M. Durkin、Claire A. Haseler、Christoph Hirschhäuser、Pietro Magrone
DOI:10.1021/jo100514a
日期:2010.6.4
2-pyridone moiety, a reaction that has found application in the synthesis of the lupin alkaloids, have been probed. This nucleophilic addition process has been shown to be reversible and favored in the case of (less stabilized) amide and lactam enolates, which readily form five- and six-membered bi-/tricyclic products. Alternative enolates (ketone, ester, thiolactam) and a variety of different acceptors (isoquinolinone