Characteristics of the Two Frontier Orbital Interactions in the Diels−Alder Cycloaddition
The Journal of Organic Chemistry2004Vol. 69(3), pp. 757–764
Citations Over TimeTop 10% of 2004 papers
Abstract
Two electron-deficient dienes were reacted with a series of twelve electron-poor and electron-rich dienophiles to give, in some cases, the corresponding Diels-Alder adducts. Clear differences in the roles played by the two frontier orbital interactions emerged. It was demonstrated that in the case of normal Diels-Alder cycloadditions, the FMO theory could predict the relative reactivities between dienophiles, while in the case of inverse-electron demand Diels-Alder reactions, it could not. It was shown that the dissymmetry in electron-rich dienophiles increases their reactivities.
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