ChemInform Abstract: Homochiral Matching in the Diels‐Alder Cyclodimerization of 2‐Vinyl‐7‐ oxabicyclo(2.2.1)hept‐2‐ene Derivatives.

Abstract

Homochiral Matching in the Diels-Alder Cyclodimerization of 2-Vinyl-7-oxabicyclo(2.2.1)hept-2-ene Derivatives.-Whereas ketone (I) dimerizes spontaneously at 0 • C in solution, the analogues (II)-(IV) react much more slowly. Generally, the dimerizations are highly stereoselective and give excellent yields for both the racemic and chiral series. -(MEERPOEL, L.; VRAHAMI, M.-M.; ANCEREWICZ, J.; VOGEL, P.; Tetrahedron Lett. 35 (1994) 1, 111-114; Sect. Chim., Univ. Lausanne, CH-1005 Lausanne, Switz.; EN)