Characteristics of the Two Frontier Orbital Interactions in the Diels−Alder Cycloaddition
作者:Claude Spino、Hadi Rezaei、Yves L. Dory
DOI:10.1021/jo0353740
日期:2004.2.1
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 frontierorbitalinteractions 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
An efficient, flexible route to highly functionalized linearly fused dicyclobutabenzenes is described based on the dual, regioselective cycloaddition of benzyne and ketene silyl acetals.
An efficient synthetic route to 3-(phenylsulfonyl)phthalides possessing a beta -C-olivoside was developed by exploiting the regioselective [2+2] cycloaddition of benzyne with ketene silyl acetal. The compounds are useful in the total synthesis of the angucyclines, including aquayamycin. (C) 2000 Elsevier Science Ltd. All rights reserved.