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
Oxidation of Aryl Sulfides to Sulfones with Alumina-Supported Ruthenium Catalyst in Dimethyl Carbonate–Water Media
作者:Mohammed Ali、Bjorn Olesen、Brindaban Ranu、Luke Clippard、Jacqueline Heath、Garrett Meyer、Tawanika Williams
DOI:10.1055/s-0035-1560834
日期:——
reaction. An environmentally friendly solvent mixture of dimethyl carbonate (DMC) and water was employed. A wide variety of aromatic sulfides were oxidized to sulfones in good to excellent yields by utilizing this procedure. A new procedure for the oxidation of sulfides to sulfones utilizing heterogeneous ruthenium reagent has been developed. A small amount of ruthenium trichloride (RuCl3) supported