An unusual reaction mode of 1-phenylpyrazolidinones toward diazonaphthalen-2(1<i>H</i>)-ones featuring cascade C(sp<sup>2</sup>)–H and C(sp<sup>3</sup>)–H bond cleavage
Muhua Wang, Linghua Zhang, Xi Chen, Xinying Zhang, Xuesen Fan
Abstract
Herein, a novel synthesis of pyrazolidinone fused 1,3-benzooxazepine derivatives <italic>via</italic> a formal [4 + 3] annulation reaction of 1-phenylpyrazolidinones with diazonaphthalen-2(1<italic>H</italic>)-ones is presented.
Topics & Concepts
ChemistryAnnulationCascadeBond cleavageStereochemistryOrganic chemistryCatalysisChromatographyCatalytic C–H Functionalization MethodsCyclopropane Reaction MechanismsSynthesis and Catalytic Reactions