Nickel(II) N‐Heterocyclic Carbene Complexes: Versatile Catalysts for C–C, C–S and C–N Coupling Reactions
作者:Lourdes Benítez Junquera、Francys E. Fernández、M. Carmen Puerta、Pedro Valerga
DOI:10.1002/ejic.201700057
日期:2017.5.18
A variety of Ni(II) complexes with a wide range of electronic and steric properties, bearing picolyl-imidazolidene ligands (a-g) and Cp (2a-f) or Cp* (3a,c,g) groups, have been synthesised and characterised using NMR and single crystal X-ray crystallography. The complexes have been used as precatalysts for a wide range of catalytic transformations most likely involving a Ni0/NiII catalytic cycle. In
合成并表征了具有各种电子和位阻性质的各种Ni(II)配合物,它们带有吡啶甲基-咪唑啉配体(ag)和Cp(2a-f)或Cp *(3a,c,g)基团使用NMR和单晶X射线晶体学。该络合物已被用作各种催化转化的预催化剂,最有可能涉及Ni0 / NiII催化循环。特别是,新的定义明确的2a,2c,3a和3c在温和条件下对Suzuki-Miyaura偶联反应,活性烯烃的加氢胺化以及芳基卤化物和硫醇的CS交叉偶联反应表现出了极大的效率和多功能性。