Ligand Control of Palladium‐Catalyzed Site‐Selective α‐ and γ‐Arylation of α,β‐Unsaturated Ketones with (Hetero)aryl Halides
作者:On Ying Yuen、Chau Ming So
DOI:10.1002/anie.202010682
日期:2020.12.21
describes the first palladium‐catalyzed, site‐selective α‐ and γ‐arylation of α,β‐unsaturated ketones with (hetero)aryl halides. A wide range of hetero(aryl)halides coupled with α,β‐unsaturated ketones, and transformation into the arylated products proceeded with excellent to good yields. The site selectivity of the reaction is switchable by simply changing the phosphine ligand to access either α‐arylated
这项研究描述了第一个钯催化的α,β-不饱和酮与(杂)芳基卤化物的位置选择性α-和γ-芳基化反应。各种各样的杂(芳基)卤化物与α,β-不饱和酮偶联,并转化为芳基化产物,收率极好。通过简单地改变膦配体,即可通过使用低催化剂负载量,以良好至极好的收率获得良好的α-芳基化或γ-芳基化产物来改变反应的位点选择性,该方法证明了良好的官能团相容性。