Carbon atoms form double bonds in compounds called alkenes and triple bonds in alkynes. An sp2-hybridized orbital and a p-orbital that is not involved in the hybridization form a double bond, while a triple bond evolves from an sp-hybridized orbital and two p-orbitals from each atom. The ...
Metrics Abstract The formation of carbon–carbon bonds is a fundamental transformation in organic synthesis. In spite of the myriad methods available, advantageous methodologies in terms of selectivity, availability of starting materials, operational simplicity, functional-group tolerance, environmental sustaina...
Although abundant in organic molecules, carbon–hydrogen (C–H) bonds are typically considered unreactive and unavailable for chemical manipulation. Recent advances in C–H functionalization technology have begun to transform this logic, while emphasizin
A simple VB analysis is used to illustrate that the greater stability of geminally disubstituted ethanes and ethylenes compared to their vicinally substituted counterparts is due to the strength of the central C-C bond and not to the stability of the radical and carbene fragments that compose ...
The activation of carbon-carbon (C-C) bonds is an effective strategy in building functional molecules. The C-C bond activation is typically accomplished via metal catalysis, with which high levels of enantioselectivity are difficult to achieve due to high reactivity of metal catalysts and the metal...
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Carbon–carbon (C–C) bonds form the backbone of many important molecules, including polymers, dyes and pharmaceutical agents. The development of new methods to create these essential connections in a rapid and practical fashion has been the focus of numerous organic chemists. This endeavour relies...
Methods for the formation of C-C bonds in heterocycles which occur via Ni- and Pd-catalyzed cross-coupling, alkenylation and alkynylation reactions are summarized. The influence of the organometallic-component and the nature of the catalyst on the efficiency of cross-coupling reactions are analyzed,...
The cleavage of carbon-carbon (C-C) bonds by transition metals is of great interest, especially as this transformation can be used to produce fuels and oth... S Hu,T Shima,Z Hou - 《Nature》 被引量: 9发表: 2014年 Catalytic carbon–carbon bond cleavage and carbon-element bond formation...