The non-metathetic role of Grubbs' carbene complexes: from hydrogen-free reduction of α,β-unsaturated alkenes to solid-supported sequential cross-metathesis/reduction

2011 ◽  
Vol 47 (5) ◽  
pp. 1565-1567 ◽  
Author(s):  
Andrés A. Poeylaut-Palena ◽  
Sebastián A. Testero ◽  
Ernesto G. Mata
Keyword(s):  
Carbene Complexes ◽  
Cross Metathesis

Ruthenium–Carbene Complexes in the Synthesis of Polybutadiene and Its Cross-Metathesis with Polynorbornene

2019 ◽  
Vol 61 (1) ◽  
pp. 65-75 ◽  
Author(s):  
A. A. Morontsev ◽  
M. L. Gringolts ◽  
M. P. Filatova ◽  
A. S. Peregudov ◽  
T. R. Akmalov ◽  
...  
Keyword(s):  
Carbene Complexes ◽  
Cross Metathesis

scholarly journals Di-tungsten Bis-carbene Complexes Linked by Condensed Heteroaromatic Spacers

2007 ◽  
Vol 62 (3) ◽  
pp. 419-426 ◽  
Author(s):  
Marilé Landmana ◽  
Helmar Görls ◽  
Chantelle Crause ◽  
Hubert Nienaber ◽  
Andrew Olivier ◽  
...  
Keyword(s):  
Structural Features ◽  
Crystallographic Data ◽  
Reaction Conditions ◽  
Carbene Complexes

The 2,7-dilithiated substrates of 3,6-dimethylthieno[3,2-b]thiophene, N,N′-dimethylpyrrolo[3,2- b]pyrrole and N-methylthieno[3,2-b]pyrrole were reacted with W(CO)6 to give, after subsequent alkylation with Et3OBF4, the ditungsten biscarbene complexes [(CO)5W{C(OEt)XXC(OEt)} W(CO)5] (XX = condensed heteroaromatic spacers). Sites of attack during the dilithiation of the condensed rings were studied and compared, and the yields of the desired ditungsten biscarbene complexes optimized by changing the reaction conditions according to the role of the heteroatoms in the rings. The crystallographic data of the three ditungsten biscarbene complexes are reported and their structural features compared. The methyl substituents on the condensed heteroaromatic rings play an important role in determining the molecular configurations.

Cross-Metathesis of Vinylsilanes with Allyl Alkyl Ethers Catalyzed by Ruthenium−Carbene Complexes

2002 ◽  
Vol 21 (5) ◽  
pp. 840-845 ◽  
Author(s):  
Małgorzata Kujawa-Welten ◽  
Cezary Pietraszuk ◽  
Bogdan Marciniec
Keyword(s):  
Carbene Complexes ◽  
Cross Metathesis ◽  
Alkyl Ethers

Solid-Supported Cross Metathesis and the Role of the Homodimerization of the Non-immobilized Olefin

2008 ◽  
Vol 73 (5) ◽  
pp. 2024-2027 ◽  
Author(s):  
Andrés A. Poeylaut-Palena ◽  
Sebastián A. Testero ◽  
Ernesto G. Mata
Keyword(s):  
Cross Metathesis
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