On the Question of Zwitterionic Intermediates in the [3+2] Cycloaddition Reactions between C-arylnitrones and Perfluoro 2-Methylpent-2-ene

The molecular mechanism of the [3 + 2] cycloaddition reaction between C-arylnitrones and perfluoro 2-methylpent-2-ene was explored on the basis of DFT calculations. It was found that despite the polar nature of the intermolecular interactions, as well as the presence of fluorine atoms near the reaction centers, all reactions considered cycloaddition proceed via a one-step mechanism. All attempts for the localization of zwitterionic intermediates on the reaction paths were not successful. Similar results were obtained regardless of the level of theory applied.

Automated summary

The molecular mechanism of the [3 + 2] cycloaddition reaction between C-arylnitrones and perfluoro 2-methylpent-2-ene proceeds via a one-step mechanism regardless of the polar nature of intermolecular interactions or the presence of fluorine atoms near the reaction centers. All attempts to locate zwitterionic intermediates on the reaction paths were unsuccessful, and similar results were obtained regardless of the level of theory applied.