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Diastereoselective synthesis of atropisomeric pyrazolyl pyrrolo[3,4-<i>d</i>]isoxazolidines <i>via</i> pyrazolyl nitrone cycloaddition to facially divergent maleimides: intensive NMR and DFT studies

Awаd I. Said, Talaat I. El‐Emary

2020RSC Advances15 citationsDOIOpen Access PDF

Abstract

Diastereoselective pyrazole-based atropisomeric cycloadducts were formed by cycloaddition of a pyrazole-based nitrone and maleimides with restricted rotation around C–N bond caused by bulk <italic>ortho</italic> substitution.

Topics & Concepts

NitroneCycloadditionAtropisomerChemistryStereochemistryOrganic chemistryCatalysisAxial and Atropisomeric Chirality SynthesisMolecular spectroscopy and chiralityAsymmetric Synthesis and Catalysis
Diastereoselective synthesis of atropisomeric pyrazolyl pyrrolo[3,4-<i>d</i>]isoxazolidines <i>via</i> pyrazolyl nitrone cycloaddition to facially divergent maleimides: intensive NMR and DFT studies | Litcius