Abstract
In the reactions of nitrone 1 with several methylene-γ-bulyrolactones 2-5 we have isolated and identified in all the cases the corresponding [3+2] cycloadducts. In all the adducts the oxygen atom of the dipole has linked to the more substituted carbon atom of the exocyclic double bond of the lactone. For lactone 5 the exocyclic double bond has shown higher reactivity than the endocyclic. Herein three new heterocyclic skeletons are reported.
Original language | English |
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Pages (from-to) | 14763-14772 |
Journal | Tetrahedron |
Volume | 53 |
Issue number | 43 |
DOIs | |
Publication status | Published - 27 Oct 1997 |