Carbon−Carbon Bond Activation by Electrophilic Complexes of Cobalt:  Anomalous [3 + 2 + 2] Allyl/Alkyne Cycloaddition Reactions and [5 + 2] Cyclopentenyl/Alkyne Insertion−Ring Expansion Reactions

1999 ◽  
Vol 121 (45) ◽  
pp. 10640-10641 ◽  
Author(s):  
Trevor L. Dzwiniel ◽  
Nola Etkin ◽  
Jeffrey M. Stryker
Keyword(s):  
Bond Activation ◽  
Ring Expansion ◽  
Cycloaddition Reactions ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Alkyne Insertion

Carbon Dioxide-Mediated C(sp2)–H Arylation of Primary and Secondary Benzylamines

2018 ◽  
Author(s):  
Mohit Kapoor ◽  
Pratibha Chand-Thakuri ◽  
Michael Young
Keyword(s):  
Carbon Dioxide ◽  
Transition Metal ◽  
Bond Activation ◽  
Bond Formation ◽  
Carbon Bond ◽  
Chelate Effect ◽  
Free Amine ◽  
Carbon Carbon Bond ◽  
New Strategy ◽  
Metal Catalyzed

Carbon-carbon bond formation by transition metal-catalyzed C–H activation has become an important strategy to fabricate new bonds in a rapid fashion. Despite the pharmacological importance of <i>ortho</i>-arylbenzylamines, however, effective <i>ortho</i>-C–C bond formation from C–H bond activation of free primary and secondary benzylamines using Pd<sup>II</sup> remains an outstanding challenge. Presented herein is a new strategy for constructing <i>ortho</i>-arylated primary and secondary benzylamines mediated by carbon dioxide (CO<sub>2</sub>). The use of CO<sub>2</sub> is critical to allowing this transformation to proceed under milder conditions than previously reported, and that are necessary to furnish free amine products that can be directly used or elaborated without the need for deprotection. In cases where diarylation is possible, a chelate effect is demonstrated to facilitate selective monoarylation.

scholarly journals Carbon–carbon bond activation of cyclobutenones enabled by the addition of chiral organocatalyst to ketone

2015 ◽  
Vol 6 (1) ◽  
Author(s):  
Bao-Sheng Li ◽  
Yuhuang Wang ◽  
Zhichao Jin ◽  
Pengcheng Zheng ◽  
Rakesh Ganguly ◽  
...  
Keyword(s):  
Bond Activation ◽  
Carbon Bond ◽  
Carbon Carbon Bond

Transition metal-catalyzed arylation of unstrained C−C single bonds

2021 ◽  
Author(s):  
Long Yang ◽  
Wuxin Zhou ◽  
Qiang Li ◽  
Xiangge Zhou
Keyword(s):  
Organic Chemistry ◽  
Transition Metal ◽  
Bond Activation ◽  
Important Research ◽  
Carbon Bond ◽  
Research Areas ◽  
Carbon Carbon Bond ◽  
Transition Metal Catalyzed ◽  
Metal Catalyzed ◽  
Single Bonds

Carbon−carbon bond activation is one of the most challenging and important research areas in organic chemistry. Selective C−C bond activation of unstrained substrates is difficult to achieve owing to its...

Room-Temperature Selective Aliphatic Carbon–Carbon Bond Activation and Functionalization of Ethers by Rhodium(II) Porphyrin

2011 ◽  
Vol 30 (14) ◽  
pp. 3691-3693 ◽  
Author(s):  
Siu Yin Lee ◽  
Tsz Ho Lai ◽  
Kwong Shing Choi ◽  
Kin Shing Chan
Keyword(s):  
Room Temperature ◽  
Bond Activation ◽  
Carbon Bond ◽  
Carbon Carbon Bond ◽  
Aliphatic Carbon

ChemInform Abstract: Regioselective Cycloaddition of 3-Azetidinones and 3-Oxetanones with Alkynes Through Nickel-Catalyzed Carbon-Carbon Bond Activation.

ChemInform ◽  
2012 ◽  
Vol 43 (29) ◽  
pp. no-no
Author(s):  
Kelvin Y. T. Ho ◽  
Christophe Aissa
Keyword(s):  
Bond Activation ◽  
Carbon Bond ◽  
Carbon Carbon Bond
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