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Updated: Jun 15, 2026

Efficient Construction of Drug-like Bispirocyclic Scaffolds Via Organocatalytic Cycloadditions of α-Imino γ-Lactones and Alkylidene Pyrazolones
Published on: February 7, 2019
Diastereoselective synthesis of P-stereogenic heterocycles via enyne ring-closing metathesis
James Stephen Harvey1, Guy T Giuffredi, Véronique Gouverneur
1Chemistry Research Laboratory, Department of Chemistry, University of Oxford, Mansfield Road, Oxford OX1 3TA, UK.
Abstract:
A range of P-containing ene-diynes suitable for desymmetrization was prepared via a two-step process starting from phosphorus oxychloride. In the presence of the Hoveyda-Grubbs II catalyst, these substrates underwent diastereoselective enyne ring-closing metathesis leading to various synthetically useful P-stereogenic heterocycles featuring an exocyclic alkynyl group. These products are amenable to further functional manipulation.
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