镍催化的交叉亲电偶联最近已成为形成 CC 键的高效实用方法。通过将此过程与成熟的 π-π 偶联化学相结合,开发了一种合成四取代烯烃的新方法。该过程依赖于使用氯硅烷作为产生反应性乙烯基镍中间体的手段,这些中间体能够与卤代烷进行还原性交叉亲电偶联。该方法不仅可以生成高度取代的烯丙醇衍生物,而且不需要化学计量的有机金属亲核试剂,与以前开发的方法相比,范围和官能团耐受性大大提高。
Preparation of Nickel Complexes with η<sup>2</sup>-Coordinated Fluorinated Ketones from Dialkylnickel Complexes
作者:Yong-Joo Kim、Kohtaro Osakada、Akio Yamamoto
DOI:10.1246/bcsj.62.964
日期:1989.3
Reactions of hexafluoroacetone and 2,2,2-trifluoroacetophenone with dialkylnickel complexes cause extrusion of the alkyl ligands to give nickel complexes having an η2-coordinated ketone and an auxiliary ligand such as bpy (2,2′-bipyridine) or dpe (1,2-bis(diphenylphosphino)ethane).
A Visible Light Driven Nickel Carbonylation Catalyst: The Synthesis of Acid Chlorides from Alkyl Halides
作者:Kristian El Chami、Yi Liu、Mohammed A. Belahouane、Yiyang Ma、Pierre‐Louis Lagueux‐Tremblay、Bruce A. Arndtsen
DOI:10.1002/anie.202213297
日期:2023.3
A visible light driven nickel carbonylation catalyst has been develop. This offers a method for carbonylative coupling reactions with an earth abundant metal at ambient temperature for the conversion of alkyl halides into synthetically versatile acid chlorides. The acid chlorides can then be transformed into an array of challenging ester, thioester and amide products.