Copper-catalyzed Hiyama coupling of (hetero)aryltriethoxysilanes with (hetero)aryl iodides.
A Cu(I)-catalyzed Hiyama coupling was achieved, which proceeds in the absence of an ancillary ligand for aryl-heteroaryl and heteroaryl-heteroaryl couplings. A P,N-ligand is required to obtain the best product yields for aryl-aryl couplings. In addition to facilitating transmetalation, CsF is also found to function as a stabilizer of the [CuAr] species, potentially generated as an intermediate after transmetalation of aryltriethoxysilanes with Cu(I)-catalysts in the absence of ancillary ligands.
Department of Chemistry & Chemical Biology, University of New Mexico , Albuquerque, New Mexico 87131, United States.
Santosh K
SK
Gurung
Surendra
S
Thapa
Adarsh S
AS
Vangala
Ramesh
R
Giri
D002384:Catalysis; D003300:Copper / Q000737:chemistry*; D006847:Hydrocarbons, Iodinated / Q000737:chemistry*; D007454:Iodides / Q000737:chemistry*; D015394:Molecular Structure; D012821:Silanes / Q000737:chemistry*
D006847:Hydrocarbons, Iodinated; D007454:Iodides; D012821:Silanes; D003300:Copper; C073870:cuprous iodide; C522569:triethoxysilane