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Publication 58  

  1. Unusual Regio- and Enantioselective [1,2]-Stevens Rearrangement of a Spirobi[dibenzazepinium] Cation
    Laurent Vial, Maria-Héléna Gonçalves, Pierre-Yves Morgantini, Jacques Weber, Gérald Bernardinelli, Jérôme Lacour
    Synlett 2004, 1565-1568

Highly symmetric spirobi[dibenzazepinium] cation 3 reacts with P4-t-Bu to form exclusively a ring-expanded tertiary amine; this unusual reactivity can be traced back to the geometry of the ylide.

DOI: 10.1055/s-2004-829069 

open archive unige:3256