K. Rossen et al., MECHANISTIC STUDIES ON THE DIASTEREOSELECTIVE HALOHYDROXYLATION OF GAMMA-DELTA UNSATURATED CARBOXAMIDES, Tetrahedron letters, 37(38), 1996, pp. 6843-6846
Evidence is presented that the diastereoselective iodohydroxylation of
the the gamma-delta unsaturated amide 2 proceeds without involvement
of iminium ion 12 directly to the tetrahedral intermediate 17 and its
subsequent endocyclic cleavage to 3. Copyright (C) 1996 Elsevier Scien
ce Ltd