Sephton T, Large JM, Butterworth S, Greaney MF. Synthesis of Functionalized Pyrrolidinone Scaffolds via Smiles-Truce Cascade.
Org Lett 2023;
25:6736-6740. [PMID:
37668613 PMCID:
PMC10510726 DOI:
10.1021/acs.orglett.3c02559]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2023] [Indexed: 09/06/2023]
Abstract
Arylsulfonamides have been found to react with cyclopropane diesters under simple base treatment to give α-arylated pyrrolidinones. This one-pot process comprises three steps: nucleophilic ring-opening of the cyclopropane, reaction of the resulting enolate in a Smiles-Truce aryl transfer, and lactam formation. The reaction represents a new, operationally simple approach to biologically active pyrrolidinones and expands Smiles-Truce arylation methods to encompass sp3 electrophilic centers in cascade processes.
Collapse