109. Intramolecular n-alkenylnitrone-additions : Regio- and stereochemistry
     Oppolzer, W.; Siles, S.; Snowden, R. L.; Bakker, B. H.; Petrzilka, M.
     Tetrahedron 1985, 41, 3497-3509

Efficient intramolecular cycloadditions of N-3-alkenyl- and N-4-alkenylnitrones proceed with opposite regioselection which is modified by dipolarophile-substituent effects. Polycyclic isoxazolidines are obtained in a highly stereocontrolled fashion, consistent with an endo-addition of the Z-nitrones.

DOI : 10.1016/S0040-4020(01)96703-1