Synthetic and Structural Studies of (NHC)Pd(allyl)Cl Complexes (NHC = N-heterocyclic carbene)

Autor:	Nicolas Marion, Roy A. Kelly, Oscar Navarro, Edwin D. Stevens, Mihai S. Viciu, William Sommer, Romain F. Germaneau, Steven P. Nolan, Luigi Cavallo
Rok vydání:	2004
Předmět:	Steric effects Ligand Stereochemistry Organic Chemistry chemistry.chemical_element Medicinal chemistry Oxidative addition Coupling reaction Reductive elimination Inorganic Chemistry chemistry.chemical_compound chemistry Physical and Theoretical Chemistry Carbene Amination Palladium
Zdroj:	Organometallics. 23:1629-1635
ISSN:	1520-6041 0276-7333
DOI:	10.1021/om034319e
Popis:	The synthesis and structural characterization of a series of palladium complexes bearing N-heterocyclic carbenes (NHC) as supporting ligands are described. The reaction of commercially available [Pd(allyl)Cl]2 and isolated or in situ generated NHC leads to monomeric palladium complexes where one NHC is bound to the metal center, as indicated by spectroscopic and single-crystal X-ray diffraction studies. The relative reactivity trend for these complexes as catalysts in aryl amination is discussed in terms of ligand steric properties, which vary as a function of imidazole-nitrogen substituents and perturbation resulting in modulation of ring planarity. The concept of buried volume is used to quantify the steric demand of each NHC in the corresponding complexes.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_________::7559e6e8155eec6c90e1eb5ba7b2e933 https://doi.org/10.1021/om034319e Zobrazit plný text záznamu