Results 291 to 300 of about 101,444 (317)

Metallocene Carbene Chemistry

ChemInform, 2004
AbstractFor Abstract see ChemInform Abstract in Full Text.
G. Erker, G. Kehr, R. Fröhlich
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Low temperature carbene-to-carbene homologations

Research on Chemical Intermediates, 1994
Since alkynes have higher symmetry than olefins, it is not easy to infer the mechanism of a triplet carbene’s addition to an alkyne by traditional product analysis studies. Specifically, no stereochemical information which might offer insight into the carbene’s spin state can be extracted from the cyclopropene products.
M. S. Lee, J. E. Jackson
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Are There Carbenes in N‐Heterocyclic Carbene Organocatalysis?

Angewandte Chemie International Edition, 2017
AbstractAzolium cations are widely employed in organocatalysis to catalyse highly valuable synthetic processes in the presence of a base. These reactions are called “N‐heterocyclic carbene catalysis”, based on the assumption that they are initiated by the formation of a free carbene through deprotonation, which can then react with the substrates and ...
Sascha Gehrke, Oldamur Hollóczki
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Carbene Olefin Complexes and Carbene Philicity

Tetrahedron Letters, 1983
Abstract The effect of carbene-olefin complexation on the relationship between absolute rates obtained by laser flash photolysis and product ratios are considered. The conditions needed to give linear Hammett plots in the complex mechanism are detailed.
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(Phosphino)(stannyl)carbene

Chemical Communications
Stable (phosphino)(stannyl)carbene has been synthesized and characterized. Reactivity and DFT calculations demonstrate its ambiphilicity and potential for unusual stannyl-substituted compounds.
Rui Wei, Xin-Feng Wang, Chaopeng Hu, Liu Leo Liu   +3 more
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Carbene-carbene rearrangements

Journal of the American Chemical Society, 1973
W. M. Jones, Robert C. Joines, John A. Myers, Tsutomu. Mitsuhashi, Kenneth E. Krajca, Edward E. Waali, Terry Lee. Davis, Andrew B. Turner   +7 more
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Persistent Triplet Carbenes

Angewandte Chemie International Edition, 2003
AbstractFor Abstract see ChemInform Abstract in Full Text.
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Fluorinated Carbenes

Chemical Reviews, 1996
Dana Lyn S., Brahms, William P., Dailey
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Stable Carbenes

Chemical Reviews, 1999
Didier, Bourissou, Olivier, Guerret, François P., Gabbaï, Guy, Bertrand   +3 more
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A novel carbene-carbene rearrangement

Journal of the American Chemical Society, 1977
Kjetil H. Holm, Lars Skattebol
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