Effenberger, FranzPodszun, Wolfgang2009-07-222016-03-312009-07-222016-03-311969314611665http://nbn-resolving.de/urn:nbn:de:bsz:93-opus-41828http://elib.uni-stuttgart.de/handle/11682/1014http://dx.doi.org/10.18419/opus-997While the stabilization of cationic centers by alpha cyclopropyl groups has been verified in many instances [2,31, to the best of our knowledge nothing is known about the influenceof cyclopropyl groups, as substituents, on the reaction mechanism of multiple bonds. The α-cyclopropylcarbonium ions 141 that may be formed are capable of rearrangement, thus providing additional information as to a polar or a more concerted mechanism of cycloaddition.eninfo:eu-repo/semantics/openAccessCycloaddition , Ethylen540article2014-09-26