The synthsis of fluorinated isoxazolidines in bicyclic settings has been realized via Ru(II)-catalyzed C-H activation of aryl nitrones with perfluoroalkyl-substituted olefins as the coupling partner. The reaction proceeded via initial chelation-assisted C(aryl)-H allylation followed by regio- and diastereoselective intramolecular dipolar addition between the nitrone directing group and the olefin unit.
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Li et al. (2018) studied this question.
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