Control of Stereoselectivity in the Ring-Opening Metathesis Polymerization of Norbornene by the Auxiliary Ligands Butadiene ando-Xylylene in Well-Defined Pentamethylcyclopentadiene Tantalum Carbene Complexes

1998 ◽  
Vol 17 (19) ◽  
pp. 4183-4195 ◽  
Author(s):  
Kazushi Mashima ◽  
Michitaka Kaidzu ◽  
Yoshiyuki Tanaka ◽  
Yuushou Nakayama ◽  
Akira Nakamura ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Carbene Complexes ◽  
Metathesis Polymerization

Cationic tungsten imido alkylidene N-heterocyclic carbene complexes for stereospecific ring-opening metathesis polymerization of norbornene derivatives

2021 ◽  
Author(s):  
Janis V. Musso ◽  
Mathis Benedikter ◽  
Paul Gebel ◽  
Vincent Gramm ◽  
Dongren Wang ◽  
...  
Keyword(s):  
Ring Opening ◽  
Ring Opening Metathesis Polymerization ◽  
Carbene Complexes ◽  
Metathesis Polymerization ◽  
Norbornene Derivatives

Cationic W alkylidene N-heterocyclic carbene complexes allow for the stereospecific ring-opening metathesis polymerization of norbornenes with high trans-iso- and high cis-syndiospecificity, respectively.

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