[EN] TRICARBONYL COMPLEXES OF TRANSITION METALS WITH BENZO-HETEROCYCLIC DERIVATIVES OF THE CYCLOPENTADIENYL ANION [FR] COMPLEXES DE TRICARBONYLÉS DE MÉTAUX DE TRANSITION ET DE DÉRIVÉS BENZO-HÉTÉROCYCLIQUES DE L'ANION CYCLOPENTADIÉNYLE
Method for preparing ortho-substituted aminoferrocenes
申请人:Brock University
公开号:US07982064B2
公开(公告)日:2011-07-19
The present disclosure relates to a method for preparing an ortho-substituted aminoferrocene comprising reacting an aminoferrocene with a Lewis acid and a lithiating reagent in the presence of an electrophile to form the ortho-substituted aminoferrocene.
Palladium(II), Platinum(II), and Iridium(I) Complexes of 2-Phosphino-1-dimethylaminoferrocenes: A Survey of Structure and Catalysis
作者:Costa Metallinos、Josh Zaifman、Lori Van Belle、Laura Dodge、Melanie Pilkington
DOI:10.1021/om900422t
日期:2009.8.10
A series of PdCl2, PtCl2 and Ir(COD)BArF. complexes bearing a rare class of racemic bidentate 2-phosphino-1-dimethylaminoferrocene ligands were prepared and characterized by NMR spectroscopy and X-ray crystallography. The new complexes displayed a structural trend relating a decrease in heteroatom-metal bond length with an increase in ligand bite angle on going from Ir to Pd and Pt. The pdCl(2) and PtCl2 complexes were almost isostructural and featured MCl2 moieties in the plane of the substituted Cp ring of the ligand. In contrast, the Ir(COD)(4)complex was distinguished by a bend of the Ir(COD) moiety toward the unsubstituted (Cp') ring. The latter gave rise to a steric interaction that placed the Cp rings in almost eclipsed conformations. Ligand 8a (2-diphenylphosphino-1-dimethylaminoferrocene) was able to promote Pd-catalyzed Suzuki-Miyaura and Buchwald-Hartwig coupling of aryl chlorides in addition to Ir-catalyzed hydrogeriation of electron-deficient and unactivated alkenes. A preliminary intramolecular hydroamination of a terminal alkene using 8a in conjunction with lr(l) afforded the cyclized product in 64% yield.