Ej. Corey et Be. Roberts, REMARKABLY COMPLEX AND UNPREDICTABLE CYCLIZATION AND REARRANGEMENT REACTIONS OF CATIONS DERIVED FROM UNSATURATED OXIRANES, Tetrahedron letters, 38(52), 1997, pp. 8921-8924
Lewis-acid catalyzed reactions of unsaturated epoxides 1 and 2 afford
the unprecedented products 3 and 5, respectively. Mechanistic pathways
for these reactions are presented (Schemes 2 and 4) along with a more
fundamental analysis. (C) 1997 Elsevier Science Ltd.