期刊
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
卷 136, 期 10, 页码 3740-3743出版社
AMER CHEMICAL SOC
DOI: 10.1021/ja4128289
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资金
- NIH [GM-45617]
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.
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