of phenol to γ-vinyl MBH carbonate forms a reactive diene intermediate, followed by a dimerization/elimination process to give functionalized exocyclohexenes with excellent chemoselectivity. When using o-hydroxychalcones as pronucleophiles, an SN2′/SN2′′/intramolecular Diels–Alder reaction sequence occurs, selectively producing a series of pharmaceutically intriguing tricyclic chromane derivatives with
前所未有的连续 S N 2'/S N 2'' 将
苯酚添加到 γ-
乙烯基 MBH
碳酸酯中形成反应性二烯中间体,然后通过二聚/消除过程得到具有优异
化学选择性的官能化外
环己烯。当使用邻羟基
查耳酮作为亲核试剂时,会发生 S N 2'/S N 2''/分子内 Diels-Alder 反应序列,选择性地产生一系列具有良好非对映选择性的药学上有趣的
三环色烷衍
生物。苯氧基阴离子表现出的良好亲核性和良好的离核性在S N 2'' 加成步骤中起关键作用。