An unconstrained exocyclic stereogenic center and a removable trimethylsilyl group are combined to induce high π-facial selectivity and near-exclusive exo-selectivity in the intramolecular Diels–Alder cycloaddition of dodeca-3,9,11-trien-5-ones. This strategy provides direct access to polysubstituted trans-1-decalones related to the symbioimines in good yield and acceptable diastereoselectivity.
一种非约束的环外立体中心和可移除的三甲基甲
硅烷基相结合,以诱导高π-面部选择性和近独家外型中的分子内的Diels-Alder环-选择性十二3,9,11
三烯-5-酮。该策略提供了以良好的收率和可接受的非对映选择性直接获得与共生
亚胺有关的多取代的反式-1-
癸酮的途径。