Ssp. Chou et Yj. Yu, INTRAMOLECULAR CYCLOADDITION OF NITRONES WITH SULFUR-SUBSTITUTED DIENES AND ITS SYNTHETIC APPLICATIONS, Tetrahedron letters, 38(27), 1997, pp. 4803-4806
A series of sulfur-substituted dienyl nitrones were conviently prepare
d from the 3-sulfolene precursors. Intramolecular 1,3-dipolar cycloadd
ition reactions gave the fused bicyclic isoxazolidines. The regio- and
stereochemical outcome of these reactions as well as the synthetic ap
plications have been explored. (C) 1997 Elsevier Science Ltd.