Stereocontrol of Intramolecular Diels−Alder Reactions: Synthetic Studies and Transition Structure Modeling with C5-Substituted 1,3,8-Nonatrienes and Nonadienynes
作者:Craig I. Turner、Rachel M. Williamson、Michael N. Paddon-Row、Michael S. Sherburn
DOI:10.1021/jo015516v
日期:2001.6.1
An investigation into the endo/exo selectivity and pi-diastereofacial selectivity of ester-tethered intramolecular Diels-Alderreactions is reported. High levels of exo selectivity are realized with terminally substituted dienophiles, and high lk pi-diastereofacial selectivities are induced by the presence of a bulky dioxolanyl substituent at the allylic position of the tether. Precursors 19S, 20S