Jump to main content
Jump to site search

Issue 9, 1996
Previous Article Next Article

Acyloxy-shifts in open and closed shell systems–intramolecular nucleophilic substitution reactions in disguise

Abstract

The 1,3-acyloxy shift in allyl formate is compared to the 1,2-acyloxy-shift in the 2-formylethyl radical at various theoretical levels. The Becke3LYP hybrid density functional gives the best agreement with experiment. The barrier for the closed shell rearrangement is 22 to 27 kcal mol–1 higher than for the open shell transformation. Both reactions can be described as intramolecular nucleophilic substitution reactions, in which the formyloxy group functions as both the nucleophile and the leaving group. In the framework of the valence bond curve crossing model, the difference in the barriers is mainly due to the energy required to excite the C[double bond, length half m-dash]C double bond to the triplet state.

Back to tab navigation

Article type: Paper
DOI: 10.1039/P29960001797
J. Chem. Soc., Perkin Trans. 2, 1996, 1797-1800

  •   Request permissions

    Acyloxy-shifts in open and closed shell systems–intramolecular nucleophilic substitution reactions in disguise

    H. Zipse, J. Chem. Soc., Perkin Trans. 2, 1996, 1797
    DOI: 10.1039/P29960001797

Search articles by author

Spotlight

Advertisements