Jacob Kopilov | Researchain

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Chemical Communications | 2009

New facets of an old ligand: titanium and zirconium complexes of phenylenediamine bis(phenolate) in lactide polymerisation catalysis

Ayellet L. Zelikoff; Jacob Kopilov; Israel Goldberg; Geoffrey W. Coates; Moshe Kol

Phenylenediamine bis(phenolate) binds in the reduced dianionic form to titanium and zirconium alkoxides giving either mononuclear or bridging dinuclear complexes depending on the metal precursors; the fluxional mononuclear titanium complex is found to exhibit extremely high activity in polymerisation of rac-lactide in the melt.

Journal of the American Chemical Society | 2008

Titanium and Zirconium Complexes of Robust Salophan Ligands. Coordination Chemistry and Olefin Polymerization Catalysis

Shimrit Gendler; Ayellet L. Zelikoff; Jacob Kopilov; Israel Goldberg; Moshe Kol

The synthesis of [ONNO]-type robust Salophan ligands featuring tertiary nitrogen donors is described for the first time. By varying the substitution pattern on the aromatic bridge and on the phenol...

Inorganic Chemistry | 2010

Dithiodiolate Ligands: Group 4 Complexes and Application in Lactide Polymerization

Ekaterina Sergeeva; Jacob Kopilov; Israel Goldberg; Moshe Kol

Dithiodiolate ligands were synthesized by reacting 1,2-ethanedithiol or 1,2-benzenedithiol with 2,2-bis(trifluoromethyl)oxirane, led selectively to mononuclear octahedral group 4 complexes of the type [{OSSO}M(OR)(2)], which features C(2) symmetry and fluxional behavior, and were highly active in the ring-opening polymerization of rac- and L-lactide.

Organometallics | 2009

C1-Symmetric Zirconium Complexes of [ONNO′]-Type Salan Ligands: Accurate Control of Catalyst Activity, Isospecificity, and Molecular Weight in 1-Hexene Polymerization

Ad Cohen; Jacob Kopilov; Israel Goldberg; Moshe Kol

Journal of the American Chemical Society | 2002

Pairing of propellers: Dimerization of octahedral ruthenium(II) and osmium(II) complexes of eilatin via π-π stacking featuring heterochiral recognition

Dalia Gut; Amira Rudi; Jacob Kopilov; Israel Goldberg; Moshe Kol

Journal of the American Chemical Society | 1977

Asymmetric, cathodic reduction of acetylpyridines

Jacob Kopilov; Ester Kariv; Larry L. Miller

Macromolecules | 2010

Same Ligand, Different Metals: Diiodo—Salan Complexes of the Group 4 Triad in Isospecific Polymerization of 1-Hexene and Propylene

Ad Cohen; Jacob Kopilov; Marina Lamberti; Vincenzo Venditto; Moshe Kol

Inorganic Chemistry | 2009

2,2'-Bipyrrolidine versus 1,2-diaminocyclohexane as chiral cores for helically wrapping diamine-diolate ligands.

Ekaterina Sergeeva; Jacob Kopilov; Israel Goldberg; Moshe Kol

Chemical Communications | 2008

Construction of C1-symmetric zirconium complexes by the design of new Salan ligands. Coordination chemistry and preliminary polymerisation catalysis studies

Ad Cohen; Adi Yeori; Jacob Kopilov; Israel Goldberg; Moshe Kol

Chemical Communications | 2009

Salan ligands assembled around chiral bipyrrolidine: predetermination of chirality around octahedral Ti and Zr centres

Ekaterina Sergeeva; Jacob Kopilov; Israel Goldberg; Moshe Kol

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