Palladium(II) 3-Iminophosphine Complexes as Intermolecular Hydroamination Catalysts for the Formation of Imines and Enamines
摘要:
Palladium(II) 3-iminophosphine derivatives were screened as intermolecular hydroamination catalysts, with (3-iminophosphine)(allyl)palladium triflate determined to be the most active for the hydroamination of 1,3-cyclohexadiene and phenyl acetylene. The iminophosphine ligands were synthesized by a three-step process and coordinated in an eta(2) and eta(1) manner to palladium(II) chloride and (allyl)palladium(II) chloride, respectively.
Palladium(II) 3-Iminophosphine Complexes as Intermolecular Hydroamination Catalysts for the Formation of Imines and Enamines
摘要:
Palladium(II) 3-iminophosphine derivatives were screened as intermolecular hydroamination catalysts, with (3-iminophosphine)(allyl)palladium triflate determined to be the most active for the hydroamination of 1,3-cyclohexadiene and phenyl acetylene. The iminophosphine ligands were synthesized by a three-step process and coordinated in an eta(2) and eta(1) manner to palladium(II) chloride and (allyl)palladium(II) chloride, respectively.
Reactivity of (3-Iminophosphine)palladium(II) Complexes: Evidence of Hemilability
作者:Andrew R. Shaffer、Joseph A. R. Schmidt
DOI:10.1021/om900066t
日期:2009.4.27
Several palladium(II) 3-iminophosphine complexes were synthesized in moderate to high yield. With relevance to many palladium-catalyzed coupling reactions, these complexes incorporate a wide variety of ligands, including amines, alkyls, allyls, and triflates. The presence of both eta'- and eta(2)-coordination modes demonstrates the hemilability of the 3-iminophosphine ligand class, as determined by X-ray crystallography and NMR spectroscopy.