have been accomplished via tandem Mannich-lactamization and aldol-lactonization reactions, respectively. A variety of enantioenriched isoindolinones (up to 99% ee) and phthalides (up to 85% ee) containing α-diazoesters were afforded in excellent yields. Furthermore, a concise synthesis of (S)-PD 172938 has been demonstrated by using this protocol.
分别通过串联曼尼希内酰胺化和醛醇内酯化反应完成了手性布朗斯台德酸催化的
异吲哚啉酮和
邻苯二甲酸酯的对映选择性合成。以优异的收率提供了多种富含对映体的
异吲哚啉酮(ee含量高达99%)和
邻苯二甲酸酯(ee含量高达85%)。此外,已经通过使用该方案证明了(S)-PD 172938的简明合成。