Unusual Diastereoselectivity in Intramolecular Diels−Alder Reactions of Substituted 3,5-Hexadienyl Acrylates. Preference for a Boatlike Structure of the Six-Atom Tether Due to Ester Overlap
作者:Michael E. Jung、Adrian Huang、Ted W. Johnson
DOI:10.1021/ol000104e
日期:2000.6.1
Thermolysis of the 3,5-hexadienyl acrylates (a) proceeds via the transition state E in which the connecting chain adopts a boatlike conformation due to a preference for maintaining ester overlap to afford the products b with good diastereoselectivity.