Catalyst-controlled formal [4 + 1] annulation of <i>N</i>-vinyl fluorenone nitrones and allenoates to prepare spirofluorenylpyrrolines
Wei Cui, Jin-Qi Zhang, Jiajie Zhang, Cui Liang, Dong‐Liang Mo
Abstract
A simple gimeracil-controlled formal [4 + 1] annulation was developed to prepare various spirofluorenylpyrrolines in good yields with high diastereoselectivity from <italic>N</italic>-vinyl fluorenone nitrones and allenoates.
Topics & Concepts
AnnulationChemistryFluorenoneCatalysisOrganic chemistryCombinatorial chemistryPolymerFluoreneCatalytic C–H Functionalization MethodsFluorine in Organic ChemistryCyclopropane Reaction Mechanisms