Stability of the ketyl radical as a descriptor in the electrochemical coupling of benzaldehyde

2020 ◽  
Vol 10 (10) ◽  
pp. 3181-3194 ◽  
Author(s):  
Jacob Anibal ◽  
Arnav Malkani ◽  
Bingjun Xu
Keyword(s):  
Ketyl Radical ◽  
Electrochemical Coupling

Electroreductive coupling is an emerging pathway for the renewable upgrading of biomass derived oxygenates. This work investigates electrochemical benzaldehyde reduction on Au, Cu, Pt and Pd using reactivity testing and in situ spectroscopy.

Using electrochemical coupling between parallel microbands for in situ monitoring of flow rates in microfluidic channels

2004 ◽  
Vol 573 (2) ◽  
pp. 333-343 ◽  
Author(s):  
Christian Amatore ◽  
Michele Belotti ◽  
Yong Chen ◽  
Emmanuel Roy ◽  
Catherine Sella ◽  
...  
Keyword(s):  
In Situ Monitoring ◽  
Microfluidic Channels ◽  
Flow Rates ◽  
Electrochemical Coupling

scholarly journals Ketyl radical reactivity via atom transfer catalysis

Science ◽  
2018 ◽  
Vol 362 (6411) ◽  
pp. 225-229 ◽  
Author(s):  
Lu Wang ◽  
Jeremy M. Lear ◽  
Sean M. Rafferty ◽  
Stacy C. Fosu ◽  
David A. Nagib
Keyword(s):  
Functional Group ◽  
Atom Transfer ◽  
Ketyl Radical ◽  
Radical Reactivity ◽  
Atom Transfer Radical Addition ◽  
Synthetic Utility ◽  
Vinyl Iodide ◽  
Dimanganese Decacarbonyl ◽  
Electron Reduction

Single-electron reduction of a carbonyl to a ketyl enables access to a polarity-reversed platform of reactivity for this cornerstone functional group. However, the synthetic utility of the ketyl radical is hindered by the strong reductants necessary for its generation, which also limit its reactivity to net reductive mechanisms. We report a strategy for net redox-neutral generation and reaction of ketyl radicals. The in situ conversion of aldehydes to α-acetoxy iodides lowers their reduction potential by more than 1 volt, allowing for milder access to the corresponding ketyl radicals and an oxidative termination event. Upon subjecting these iodides to a dimanganese decacarbonyl precatalyst and visible light irradiation, an atom transfer radical addition (ATRA) mechanism affords a broad scope of vinyl iodide products with highZ-selectivity.

Investigating Mechano-Electrochemical Coupling Phenomenon in Lithium-Ion Pouch Cells Using In-situ Neutron Diffraction

2021 ◽  
Vol 104 (1) ◽  
pp. 75-85
Author(s):  
Juliane Irine Preimesberger ◽  
SeungYeon Kang ◽  
Yan Chen ◽  
Ke An ◽  
Craig B. Arnold
Keyword(s):  
Neutron Diffraction ◽  
Lithium Ion ◽  
Electrochemical Coupling ◽  
In Situ Neutron Diffraction

Recent Advances in Metal-Catalyzed, Electrochemical Coupling Reactions of sp2 Halides/Boronic Acids and sp3 Centers

Synthesis ◽  
2020 ◽  
Author(s):  
Zachary J. Gale-Day
Keyword(s):  
Cross Coupling ◽  
Short Review ◽  
Boronic Acids ◽  
Coupling Reactions ◽  
Cross Coupling Reactions ◽  
Organic Electrochemistry ◽  
Recent Advances ◽  
Electrochemical Coupling ◽  
Metal Catalyzed

AbstractTraditionally, metal-catalyzed cross-coupling reactions rely on stable but expensive metals, such as palladium. However, the recent development of synthetic organic electrochemistry allows for in situ redox manipulations, expanding the use of cheaper, abundant and sustainable metals, such as nickel and copper as efficient cross-coupling catalysts. This short review covers the recent advances in metal-catalyzed electrochemical coupling reactions, with a focus on reactions of sp2 electrophiles and nucleophiles with sp3 coupling partners to form both C–C and C–heteroatom bonds.1 Introduction2 Nickel-Catalyzed C–C sp2–sp3 Coupling Reactions3 Coupling of Aryl Groups with Heteroatomic Nuclei4 Conclusion

Investigating Mechano-Electrochemical Coupling Phenomenon in Lithium-Ion Pouch Cells Using In-situ Neutron Diffraction

2021 ◽  
Vol MA2021-02 (1) ◽  
pp. 96-96
Author(s):  
Juliane Irine Preimesberger ◽  
SeungYeon Kang ◽  
Yan Chen ◽  
Ke An ◽  
Craig B. Arnold
Keyword(s):  
Neutron Diffraction ◽  
Lithium Ion ◽  
Electrochemical Coupling ◽  
In Situ Neutron Diffraction

Rendez vous with Saturn's rings

1984 ◽  
Vol 75 ◽  
pp. 743-759 ◽  
Author(s):  
Kerry T. Nock
Keyword(s):  
Solar Energy ◽  
Electric Propulsion ◽  
Power Source ◽  
Propulsion System ◽  
Low Thrust ◽  
Ring Plane ◽  
The Earth ◽  
Total Impulse ◽  
Saturn's Rings

ABSTRACTA mission to rendezvous with the rings of Saturn is studied with regard to science rationale and instrumentation and engineering feasibility and design. Future detailedin situexploration of the rings of Saturn will require spacecraft systems with enormous propulsive capability. NASA is currently studying the critical technologies for just such a system, called Nuclear Electric Propulsion (NEP). Electric propulsion is the only technology which can effectively provide the required total impulse for this demanding mission. Furthermore, the power source must be nuclear because the solar energy reaching Saturn is only 1% of that at the Earth. An important aspect of this mission is the ability of the low thrust propulsion system to continuously boost the spacecraft above the ring plane as it spirals in toward Saturn, thus enabling scientific measurements of ring particles from only a few kilometers.

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