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 language | English |
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Pages (from-to) | 7115-7118 |
Number of pages | 4 |
Journal | Tetrahedron Letters |
Volume | 35 |
Issue number | 38 |
DOIs | |
Publication status | Published - 1994 |