Study of Very Reactive Tautomeric Phenol Dienones as Dienes in Diels−Alder Reactions
作者:Yves L. Dory、Andrée-Lucie Roy、Pierre Soucy、Pierre Deslongchamps
DOI:10.1021/ol8026768
日期:2009.3.19
ortho-benzoquinones are very reactive as diene partners in Diels−Alderreactions. Careful exploration of the orbital factors that govern their surprising behavior shows that their LUMO is almost as electron demanding as that of o-benzoquinone itself. Methyl substituents at either end of their diene system influence the activation energy through modification of the reaction pathway being more or less