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.
Mukaiyama Aldol Reaction of Ester Acceptors: Organoaluminums Catalyze Nucleophilic Addition of Ketene Silyl Acetals