Olefin Metathesis with Polymer-Bound Tungsten Complexes

1978 ◽  
Vol 17 (2) ◽  
pp. 131-132 ◽  
Author(s):  
Siegfried Warwel ◽  
Peter Buschmeyer
Keyword(s):  
Olefin Metathesis ◽  
Tungsten Complexes

Olefin Metathesis Reactions Initiated by d2Molybdenum or Tungsten Complexes

2005 ◽  
Vol 24 (22) ◽  
pp. 5211-5213 ◽  
Author(s):  
Richard R. Schrock ◽  
Lourdes Pia H. Lopez ◽  
Jillian Hafer ◽  
Rojendra Singh ◽  
Amritanshu Sinha ◽  
...  
Keyword(s):  
Olefin Metathesis ◽  
Tungsten Complexes ◽  
Metathesis Reactions

B(C6F5)3 Activation of Oxo Tungsten Complexes That Are Relevant to Olefin Metathesis

2013 ◽  
Vol 32 (19) ◽  
pp. 5256-5259 ◽  
Author(s):  
Dmitry V. Peryshkov ◽  
William P. Forrest ◽  
Richard R. Schrock ◽  
Stacey J. Smith ◽  
Peter Müller
Keyword(s):  
Olefin Metathesis ◽  
Tungsten Complexes

Carbonyl Olefinating Carbene-Tungsten Complexes and Their Suitability as Catalysts in Olefin-Metathesis

1986 ◽  
Vol 25 (10) ◽  
pp. 909-910 ◽  
Author(s):  
Thomas Kauffmann ◽  
Renate Abeln ◽  
Siegfried Welke ◽  
Dorothea Wingbermühle
Keyword(s):  
Olefin Metathesis ◽  
Tungsten Complexes

Catalytic Carbonyl-Olefin Metathesis of Aliphatic Ketones: Iron(III) HomoDimers as Lewis Acidic Superelectrophiles

2018 ◽  
Author(s):  
Haley Albright ◽  
Paul S. Riehl ◽  
Christopher C. McAtee ◽  
Jolene P. Reid ◽  
Jacob R. Ludwig ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Olefin Metathesis ◽  
Acid Activation ◽  
Lewis Acid Catalysts ◽  
Distinct Mode ◽  
Aliphatic Ketones ◽  
Carbon Carbon Bond ◽  
Metathesis Reactions ◽  
Acid Catalyzed

<div>Catalytic carbonyl-olefin metathesis reactions have recently been developed as a powerful tool for carbon-carbon bond</div><div>formation. However, currently available synthetic protocols rely exclusively on aryl ketone substrates while the corresponding aliphatic analogs remain elusive. We herein report the development of Lewis acid-catalyzed carbonyl-olefin ring-closing metathesis reactions for aliphatic ketones. Mechanistic investigations are consistent with a distinct mode of activation relying on the in situ formation of a homobimetallic singly-bridged iron(III)-dimer as the active catalytic species. These “superelectrophiles” function as more powerful Lewis acid catalysts that form upon association of individual iron(III)-monomers. While this mode of Lewis acid activation has previously been postulated to exist, it has not yet been applied in a catalytic setting. The insights presented are expected to enable further advancement in Lewis acid catalysis by building upon the activation principle of “superelectrophiles” and broaden the current scope of catalytic carbonyl-olefin metathesis reactions.</div>

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