Synthesis of Nitrile Bearing Acyclic Quaternary Centers through Co(III)‐Catalyzed Sequential C−H Bond Addition to Dienes and
<i>N</i>
‐Cyanosuccinimide
作者:Sun Dongbang、Jonathan A. Ellman
DOI:10.1002/anie.202010735
日期:2021.1.25
quaternary centers bearing nitriles by cobalt‐catalyzed C−H bond activation and sequential addition to internally substituted 1,3‐dienes and an electrophilic cyanating reagent with high regio and stereocontrol. 2‐Aryl and alkyl monosubstituted dienes provide α‐aryl and α‐alkyl α‐methyl‐substituted nitriles, respectively. An even wider variety of functionality can be installed at the quaternary carbon by
在这里,我们公开了一种三组分策略,通过钴催化的 C-H 键活化和顺序加成内部取代的 1,3-二烯和具有高区域和立体控制的亲电子氰化试剂来获得带有腈的季铵中心。2-芳基和烷基单取代二烯分别提供 α-芳基和 α-烷基 α-甲基取代的腈。通过使用 1,2-二取代二烯,可以在季碳上安装更多种类的功能。通过各种转化,包括转化为 γ-内酯和四唑,成功地证明了腈产品的合成效用。产品中观察到的连通性以及对氘标记反应物的研究提供了对该机制的深入了解。