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
Ruthenium(II) Picolyl-NHC Complexes: Synthesis, Characterization, and Catalytic Activity in Amine N-alkylation and Transfer Hydrogenation Reactions
作者:Francys E. Fernández、M. Carmen Puerta、Pedro Valerga
DOI:10.1021/om300692a
日期:2012.10.8
were recrystallized, and X-ray crystal structures are reported for 1a,f. Furthermore, compounds 1a–f show catalyticactivity in transfer hydrogenation of ketones and N-alkylation of amines. Notably, complexes 1a,c,f were found to be very efficient and versatile catalysts toward transfer hydrogenation of a wide range of ketones and imines in addition to N-alkylation of several amines.