Novel spiro cyclisations of N-acyliminium ions involving an aromatic π-nucleophile

Patrick D. Bailey, Keith M. Morgan, David I. Smith, John M. Vernon

Research output: Contribution to journalArticle

Abstract

Several spiro 2-pyrrolidin-5-ones were obtained by a two-step procedure from N-substituted succinimides, involving spiro cyclisation of N-acyliminium ion intermediates in refluxing trifluoroacetic acid; in all cases cyclisation utilised a tethered aromatic p-nucleophile, and ring-closure followed 5- or 6-exo-trig pathways.

Original languageEnglish
Pages (from-to)7115-7118
Number of pages4
JournalTetrahedron Letters
Volume35
Issue number38
DOIs
Publication statusPublished - 1994

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