Iron-Catalyzed C(sp<sup>2</sup>)H and C(sp<sup>3</sup>)H Arylation by Triazole Assistance
作者:Qing Gu、Hamad H. Al Mamari、Karolina Graczyk、Emelyne Diers、Lutz Ackermann
DOI:10.1002/anie.201311024
日期:2014.4.7
Modular 1,2,3‐triazoles enabled iron‐catalyzed CH arylations with broad scope. The novel triazole‐based bidentate auxiliary is easily accessible in a highly modular fashion and allowed for user‐friendly iron‐catalyzed C(sp2)H functionalizations of arenes and alkenes with excellent chemo‐ and diastereoselectivities. The versatile iron catalyst also proved applicable for challenging C(sp3)H functionalizations
1,2,3-三唑单元可实现铁催化的CH芳基化,具有广泛的应用范围。新型的基于三唑的双齿助剂可以高度模块化的方式轻松获得,并允许用户友好的芳烃和烯烃的铁催化C(sp 2)H官能化,具有出色的化学和非对映选择性。通用铁催化剂还证明可用于具有挑战性的C(sp 3)H官能化,并通过有机金属作用方式进行。三唑辅助的CH活化策略是在非常温和的反应条件下发生的,助剂很容易以无痕方式除去。有趣的是,三唑基被证明优于以前使用的助剂。