Metal-free chemoselective hydrogenation of unsaturated carbon–carbon bonds via cathodic reduction

2020 ◽  
Vol 7 (14) ◽  
pp. 1817-1822 ◽  
Author(s):  
Yongwei Qin ◽  
Jingjun Lu ◽  
Zirong Zou ◽  
Huanliang Hong ◽  
Yamei Li ◽  
...  
Keyword(s):  
Electrochemical Reduction ◽  
Selective Hydrogenation ◽  
Cathodic Reduction ◽  
Metal Free ◽  
Chemoselective Hydrogenation ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

A straightforward protocol for efficient and highly selective hydrogenation of unsaturated carbon–carbon bonds via electrochemical reduction has been reported.

scholarly journals Metal-free visible light photoredox enables generation of carbyne equivalents via phosphonium ylide C–H activation

2019 ◽  
Vol 10 (6) ◽  
pp. 1687-1691 ◽  
Author(s):  
Mrinmoy Das ◽  
Minh Duy Vu ◽  
Qi Zhang ◽  
Xue-Wei Liu
Keyword(s):  
Visible Light ◽  
Bond Formation ◽  
Formation Processes ◽  
New Approach ◽  
Carbon Bond ◽  
Metal Free ◽  
Carbon Carbon Bond ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds ◽  
New Strategy

Phosphonium ylides have shown their synthetic usefulness in important carbon–carbon bond formation processes. Our new strategy employs phosphonium ylides as novel carbyne equivalents and features a new approach for constructing carbon–carbon bonds from alkenes.

scholarly journals Synthesis of 2-oxindoles via 'transition-metal-free' intramolecular dehydrogenative coupling (IDC) of sp2 C–H and sp3 C–H bonds

2016 ◽  
Vol 12 ◽  
pp. 1153-1169 ◽  
Author(s):  
Nivesh Kumar ◽  
Santanu Ghosh ◽  
Subhajit Bhunia ◽  
Alakesh Bisai
Keyword(s):  
Transition Metal ◽  
Alkyl Halides ◽  
One Pot ◽  
Metal Free ◽  
Quaternary Center ◽  
Dehydrogenative Coupling ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

The synthesis of a variety of 2-oxindoles bearing an all-carbon quaternary center at the pseudo benzylic position has been achieved via a ‘transition-metal-free’ intramolecular dehydrogenative coupling (IDC). The construction of 2-oxindole moieties was carried out through formation of carbon–carbon bonds using KOt-Bu-catalyzed one pot C-alkylation of β-N-arylamido esters with alkyl halides followed by a dehydrogenative coupling. Experimental evidences indicated toward a radical-mediated path for this reaction.

scholarly journals Correction to “Selective Hydrogenation of Unsaturated Carbon–Carbon Bonds in Aromatic-Containing Platform Molecules”

ACS Catalysis ◽  
2016 ◽  
Vol 6 (5) ◽  
pp. 3127-3127
Author(s):  
Thomas J. Schwartz ◽  
Spencer D. Lyman ◽  
Ali Hussain Motagamwala ◽  
Max A. Mellmer ◽  
James A. Dumesic
Keyword(s):  
Selective Hydrogenation ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

Selective Hydrogenation of Unsaturated Carbon–Carbon Bonds in Aromatic-Containing Platform Molecules

ACS Catalysis ◽  
2016 ◽  
Vol 6 (3) ◽  
pp. 2047-2054 ◽  
Author(s):  
Thomas J. Schwartz ◽  
Spencer D. Lyman ◽  
Ali Hussain Motagamwala ◽  
Max A. Mellmer ◽  
James A. Dumesic
Keyword(s):  
Selective Hydrogenation ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds

Formation of Carbon-Carbon Bonds Mediated by Hypervalent Iodine Reagents Under Metal-free Conditions

2020 ◽  
Vol 24 (1) ◽  
pp. 74-103 ◽  
Author(s):  
Xiaoxian Li ◽  
Tongxing Liu ◽  
Beibei Zhang ◽  
Dongke Zhang ◽  
Haofeng Shi ◽  
...  
Keyword(s):  
Hypervalent Iodine ◽  
Organic Transformations ◽  
Metal Free ◽  
The Past ◽  
Carbon Carbon Bonds ◽  
Carbon Bonds ◽  
Iodine Chemistry

During the past several decades, hypervalent iodine reagents have been widely used in various organic transformations. Specifically, these exclusive classes of reagents have been extensively used for the construction of carbon-carbon bonds. This review aims to cover all the reactions involving the construction of carbon-carbon bonds mediated by hypervalent iodine reagents, providing references and highlights for synthetic chemists who are interested in hypervalent iodine chemistry.

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