Enantioselective Synthesis of Vicinal All‐Carbon Quaternary Centers via Iridium‐Catalyzed Allylic Alkylation
作者:J. Caleb Hethcox、Samantha E. Shockley、Brian M. Stoltz
DOI:10.1002/anie.201804820
日期:2018.7.9
development of the first enantioselective transition‐metal‐catalyzed allylic alkylation providing access to acyclic products bearing vicinal all‐carbon quaternary centers is disclosed. The iridium‐catalyzed allylic alkylation reaction proceeds with excellent yields and selectivities for a range of malononitrile‐derived nucleophiles and trisubstituted allylic electrophiles. The utility of these sterically congested
公开了第一个对映选择性过渡金属催化的烯丙基烷基化反应的开发,该反应可提供带有邻位全碳四元中心的无环产物。铱催化的烯丙基烷基化反应对一系列丙二腈衍生的亲核试剂和三取代的烯丙基亲电试剂具有出色的收率和选择性。通过一系列不同的化学和非对映选择性产物转化来探索这些空间拥挤产物的效用,以提供许多极有价值的,功能密集的构建基块,包括那些包含邻近的全碳四元立体中心的结构基块。