Ring-closing metathesis of sterically congested functionalized zirconocenes–ethene polymerization catalysts derived from related bridged and open metallocenes

2009 ◽  
pp. 8923 ◽  
Author(s):  
Tülay Aslı Tumay ◽  
Gerald Kehr ◽  
Roland Fröhlich ◽  
Gerhard Erker
Keyword(s):  
Polymerization Catalysts ◽  
Ring Closing Metathesis ◽  
Ethene Polymerization

Mechanistic Study of the Calcination of Supported Chromium(III) Precursors for Ethene Polymerization Catalysts

1996 ◽  
Vol 100 (26) ◽  
pp. 11062-11066 ◽  
Author(s):  
V. J. Ruddick ◽  
P. W. Dyer ◽  
G. Bell ◽  
V. C. Gibson ◽  
J. P. S. Badyal
Keyword(s):  
Mechanistic Study ◽  
Polymerization Catalysts ◽  
Ethene Polymerization

Chelate Bis(imino)pyridine Cobalt Complexes:  Synthesis, Reduction, and Evidence for the Generation of Ethene Polymerization Catalysts by Li+Cation Activation

2005 ◽  
Vol 127 (40) ◽  
pp. 13955-13968 ◽  
Author(s):  
Nina Kleigrewe ◽  
Winfried Steffen ◽  
Tobias Blömker ◽  
Gerald Kehr ◽  
Roland Fröhlich ◽  
...  
Keyword(s):  
Cobalt Complexes ◽  
Polymerization Catalysts ◽  
Cation Activation ◽  
Ethene Polymerization

Chromium(III) complexes bearing N,N-chelate ligands as ethene polymerization catalysts

1998 ◽  
pp. 1651-1652 ◽  
Author(s):  
Vernon C. Gibson ◽  
Claire Newton ◽  
Carl Redshaw ◽  
Gregory A. Solan ◽  
Andrew J. P. White ◽  
...  
Keyword(s):  
Polymerization Catalysts ◽  
Chelate Ligands ◽  
Ethene Polymerization

Highly Active Ethene Polymerization Catalysts with Unusual Imine Ligands

2005 ◽  
pp. 59-99 ◽  
Author(s):  
Gerrit A. Luinstra ◽  
Joachim Queisser ◽  
Benno Bildstein ◽  
Hans-Helmut Görtz ◽  
Christoph Amort ◽  
...  
Keyword(s):  
Polymerization Catalysts ◽  
Highly Active ◽  
Imine Ligands ◽  
Ethene Polymerization

Heterogenized iron(II) complexes as highly active ethene polymerization catalysts

2002 ◽  
Vol 179 (1-2) ◽  
pp. 155-173 ◽  
Author(s):  
Roland Schmidt ◽  
M.Bruce Welch ◽  
Syriac J Palackal ◽  
Helmut G Alt
Keyword(s):  
Polymerization Catalysts ◽  
Highly Active ◽  
Ethene Polymerization

Influence of the ligand structure of hafnocene polymerization catalysts: A theoretical study on chain termination reactions in ethene polymerization

2008 ◽  
Vol 693 (26) ◽  
pp. 3915-3922 ◽  
Author(s):  
Virve A. Karttunen ◽  
Mikko Linnolahti ◽  
Tapani A. Pakkanen ◽  
John R. Severn ◽  
Esa Kokko ◽  
...  
Keyword(s):  
Theoretical Study ◽  
Chain Termination ◽  
Polymerization Catalysts ◽  
Ligand Structure ◽  
Ethene Polymerization

Nickel-Catalyzed Inter- and Intramolecular Carbon-Sulfur Bond Metathesis by Reversible Arylation

2019 ◽  
Author(s):  
Tristan Delcaillau ◽  
Alessandro Bismuto ◽  
Zhong Lian ◽  
Bill Morandi
Keyword(s):  
Good Yield ◽  
Functional Group ◽  
Product Formation ◽  
Single Bond ◽  
Ring Closing Metathesis ◽  
Catalytic Systems ◽  
Metathesis Reactions ◽  
New Applications ◽  
Further Development ◽  
Sulfur Bond

A nickel-catalyzed carbon-sulfur bond metathesis has been developed to access high-value thioethers. 1,2-bis(dicyclohexylphosphino)ethane (dcype) is essential to promote this highly functional group tolerant reaction. Further, synthetically challenging macrocycles could be obtained in good yield in an unusual example of ring-closing metathesis which does not involve alkene bonds. In-depth organometallic studies support a reversible Ni(0)-Ni(II) pathway to product formation. Overall, this work does not only disclose a more sustainable and more functional group tolerant alternative to previous catalytic systems based on Pd, but also presents new applications and mechanistic information which are highly relevant to the further development and application of unusual single bond metathesis reactions.

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