Iron‐Catalyzed Cross‐Coupling of Propargyl Ethers with Grignard Reagents for the Synthesis of Functionalized Allenes and Allenols
作者:Daniels Posevins、Aitor Bermejo‐López、Jan‐E. Bäckvall
DOI:10.1002/anie.202106742
日期:2021.10.4
iron-catalyzed cross-coupling reaction of propargyl ethers with Grignard reagents. The reaction was demonstrated to be stereospecific and allows for a facile preparation of optically active allenes via efficient chirality transfer. Various tri- and tetrasubstituted fluoroalkyl allenes can be obtained in good to excellent yields. In addition, an iron-catalyzed cross-coupling of Grignard reagents with α-alkynyl
在此,我们公开了炔丙基醚与格氏试剂的铁催化交叉偶联反应。该反应被证明是立体定向的,并允许通过有效的手性转移轻松制备光学活性丙二烯。各种三和四取代的氟代烷基丙二烯可以以良好至优异的产率获得。此外,本文公开了格氏试剂与 α-炔基氧杂环丁烷和四氢呋喃的铁催化交叉偶联,这构成了分别获得完全取代的 β-或 γ-烯丙醇的直接方法。