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.
氟化
异恶唑烷在双环环境中的合成已通过Ru(II)催化的
全氟烷基取代的烯烃作为偶联伙伴的芳基硝酮的C–H活化。该反应通过初始螯合辅助的C(芳基)-H烯丙基化反应进行,然后在硝基导向基团和烯烃单元之间进行区域和非对映选择性分子内偶极加成。