130515-23-0Relevant articles and documents
Dynamics and a unified understanding of competitive [2,3]- and [1,2]-sigmatropic rearrangements based on a study of ammonium ylides
Biswas, Bibaswan,Collins, Sean C.,Singleton, Daniel A.
, p. 3740 - 3743 (2014)
The [2,3]- and [1,2]-sigmatropic rearrangements of ammonium ylides are studied by a combination of experimental, standard computational, and dynamic trajectory methods. The mixture of concerted [2,3] rearrangement and bond cleavage observed experimentally is accounted for by the outcome of trajectories passing through the formal [2,3] rearrangement transition state. In this way the bond cleavage is promoted by the pericyclic stabilization of the [2,3] transition state. It is proposed that this dynamic effect is responsible for the pervasive co-occurrence of the two rearrangements.
Esters of choline and beta-trimethylammoniopropionic acid: geometrical isomerism and anti-acetylcholinesterase activity.
Kay,Robinson
, p. 145 - 154 (2007/10/05)
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