Ni-Catalyzed Regioselective β,δ-Diarylation of Unactivated Olefins in Ketimines via Ligand-Enabled Contraction of Transient Nickellacycles: Rapid Access to Remotely Diarylated Ketones
作者:Prakash Basnet、Roshan K. Dhungana、Surendra Thapa、Bijay Shrestha、Shekhar KC、Jeremiah M. Sears、Ramesh Giri
DOI:10.1021/jacs.8b03163
日期:2018.6.27
zed regioselective β,δ-diarylation of unactivated olefins in ketimines with aryl halides and arylzinc reagents. This diarylation proceeds at remote locations to the carbonyl group to afford, after simple H+ workup, diversely substituted β,δ-diarylketones that are otherwise difficult to access readily with existing methods. Deuterium-labeling and crossover experiments indicate that diarylation proceeds
我们公开了 [(PhO)3P]/NiBr2 催化的区域选择性 β,δ-二芳基化酮亚胺中未活化的烯烃与芳基卤化物和芳基锌试剂。这种二芳基化作用在偏远的位置进行到羰基,经过简单的 H+ 处理后,可以得到多种取代的 β,δ-二芳基酮,而这些酮很难用现有方法轻松获得。氘标记和交叉实验表明二芳基化是通过配体启用的瞬态镍环收缩进行的。