Ketimine iron

The corresponding iron-catalyzed oligomerization of ethylene was developed by Gibson and coworkers [125]. A combination of an iron precatalyst with MAO (methyl aluminoxane) yields a catalyst that affords ethylene oligomers (>99% linear ot-olefin mixtures). The activity of ketimine iron complexes (R = Me) is higher than that of the aldimine analogs (R = H) and also the a-value of the oligomer is better (Scheme 41). 

Ketenyl complexes, in Ru-Os mixed-metal clusters, 6, 1080 Ketenylidenes, in iron cluster compounds, 6, 301 Ketenylidenetriphenylphosphoranes, with platinum, 8, 632 Ketimines... 

Imhof, W., Anders, E., Gobel, A., Gorls, H. Atheoretical study on the complete catalytic c cle of the hetero-Pauson-Khand-type [2+2+1] cycloaddition reaction of ketimines, carbon monoxide and ethylene catalyzed by iron carbonyl complexes. Chem.— Eur. J. 2003, 9,1166-1181. 

S. McTavish, G. Britovsek, T. Smit, V. Gibson, A. White, D. Williams, Iron-based ethylene polymerization catalysts supported by Bis(imino)pyridine ligands derivatization via depiotonation/alkylation at the ketimine methyl position. J. Mol. Cat. A (Them. 261, 293-300 (2007)... 

As with the ketimine variant of the pincer, we initiated this chemistry by the reduction of the iron dibromide complex ( " PDAl)FeBr2 ( PDAl = 2,6(2,6- Pr2-CgH3N=CH)2C5H3N) [40],... 

Aromatic ketimines are reduced enantioselectively to amines (50 atm H2/toluene/65°C/24h), using a cooperative catalysis involving Knolker s iron complex and a BINOL-derived hydrogen phosphate auxiliary, with P-NMR evidence supporting the bifunctional catalysis. A phosphine-free chiral cationic ruthenium complex catalyses enantioselective hydrogenation of IV-alkyl ketimines, including many heretofore problematic substrates. 0... 

There has been a review of asymmetric Friedel—Crafts reactions. It has been shown that the rhodium-catalysed reaction of potassium phenyltrifluoroborate with A-tosyl ketimines may lead to products such as (18) with high enantioselectivity. (g) The reaction of A-t-butanesuUinylimino esters with arenes to give products (19) is catalysed by Lewis acids, such as indium triflate, and may lead to enantio-metrically enriched a-glycines. The intramolecular alkylation of hydrogenated 0 tetralins, shown in Scheme 2, using iron(III) or aluminium(III) catalysts yields cis-hexahydrobenzophenanthridines. Formation of a stabilized carbocation intermediate is... 

A well-defined iron hydride complex FeH(CO)(NO)(Ph3P)2 is highly active as a catalyst for selective hydrosilylation of internal alkynes to vinylsilanes. Depending on the silane employed, either E- or Z-selective hydrosilylation products are formed in excellent yields and good to excellent stereoselectivities. The stereochemical course of this transformation is dependent on the steric demand of the substituents on the silane. " A new 0 family of Lewis-basic 2-pyridyloxazolines catalyses the enantioselective reduction of prochiral aromatic ketones and ketimines using trichlorosilane. 1-Isoquinolyloxazoline (20) derivative was identified as the most efficient catalyst of the series capable of delivering high enantioselectivities in the reduction of both ketones (up to 94% ee) and ketimines (up to 89% (p)... 

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