scholarly journals MnI complex redox potential tunability by remote lewis acid interaction

2020 ◽  
Vol 49 (46) ◽  
pp. 16623-16626
Author(s):  
Anandi Srinivasan ◽  
Jesús Campos ◽  
Nicolas Giraud ◽  
Marc Robert ◽  
Orestes Rivada-Wheelaghan
Keyword(s):  
Redox Potential ◽  
Lewis Acid ◽  
Acid Interaction

MnI-Complex electronic tuneability through remote interactions. Introducing 2-pyridone based ligands as redox tuner in molecular electrocatalysis.

scholarly journals New insights into the Lewis acidity of guanidinium species: Lewis acid interaction provides reactivity

2020 ◽  
Vol 23 (2) ◽  
pp. 185-199
Author(s):  
Muhammad Ageel Ashraf ◽  
Cheng Li ◽  
Fataneh Norouzi ◽  
Dangquan Zhang
Keyword(s):  
Lewis Acid ◽  
Lewis Acidity ◽  
Acid Interaction

scholarly journals Fluorosilane Activation by Pd/Ni→Si–F→Lewis Acid Interaction: An Entry to Catalytic Sila-Negishi Coupling

2020 ◽  
Vol 142 (33) ◽  
pp. 14039-14044
Author(s):  
Hajime Kameo ◽  
Hiroki Yamamoto ◽  
Koki Ikeda ◽  
Tomohito Isasa ◽  
Shigeyoshi Sakaki ◽  
...  
Keyword(s):  
Lewis Acid ◽  
Acid Interaction ◽  
Negishi Coupling

scholarly journals Design and reactions of a carbon Lewis base/boron Lewis acid frustrated Lewis pair

2017 ◽  
Vol 375 (2101) ◽  
pp. 20170015 ◽  
Author(s):  
Jennifer Möricke ◽  
Birgit Wibbeling ◽  
Constantin G. Daniliuc ◽  
Gerald Kehr ◽  
Gerhard Erker
Keyword(s):  
Sulfur Dioxide ◽  
Lewis Acid ◽  
Lewis Base ◽  
Addition Reactions ◽  
Acid Interaction ◽  
Frustrated Lewis Pair ◽  
Hb C

The conjugated dienamine 4 selectively adds Piers' borane [HB(C 6 F 5 ) 2 ] to give the enamine/borane system 5 , which features a boratirane structure by internal enamine carbon Lewis base to boron Lewis acid interaction. Compound 5 behaves as a C/B frustrated Lewis pair and undergoes typical addition reactions to benzaldehyde, several nitriles and to sulfur dioxide. This article is part of the themed issue ‘Frustrated Lewis pair chemistry’.

scholarly journals A General Protocol for Radical Anion [3+2] Cycloaddition Enabled by Tandem Lewis Acid Photoredox Catalysis

Synthesis ◽  
2017 ◽  
Vol 50 (03) ◽  
pp. 539-547 ◽  
Author(s):  
Tehshik Yoon ◽  
Adrian Amador ◽  
Evan Sherbrook ◽  
Zhan Lu
Keyword(s):  
Redox Potential ◽  
Lewis Acid ◽  
Radical Anion ◽  
Photoredox Catalysis ◽  
Critical Factors ◽  
Radical Intermediate ◽  
Cyclopropyl Ketone ◽  
Cyclopropyl Ketones

A method for intermolecular [3+2] cycloaddition between aryl cyclopropyl ketones and alkenes involving the combination of Lewis acid and photoredox catalysis is reported. In contrast to other more common methods for [3+2] cycloaddition, these conditions operate using a broad range of both electron-rich and electron-deficient reaction partners. The critical factors predicting the success of these reactions is the redox potential of the cyclopropyl ketone and the ability of the alkene to stabilize a key radical intermediate.

Redox potential of the small intestine lumer in a model of experimental hemorrhage in rats

2001 ◽  
Vol 120 (5) ◽  
pp. A195-A195
Author(s):  
J PAULA ◽  
E SPINEDI ◽  
A DUBIN ◽  
D BUSTOS ◽  
J DAVOLOS
Keyword(s):  
Small Intestine ◽  
Redox Potential

Comparison of two methods of measuring the depth of the redox potential discontinuity in intertidal mudflat sediments

2013 ◽  
Vol 487 ◽  
pp. 7-13 ◽  
Author(s):  
TG Gerwing ◽  
AMA Gerwing ◽  
D Drolet ◽  
DJ Hamilton ◽  
MA Barbeau
Keyword(s):  
Redox Potential ◽  
Intertidal Mudflat ◽  
Mudflat Sediments

Cobalt/Lewis Acid Catalysis for Hydrocarbofunctionalization of Alkynes via Cooperative C–H Activation

2020 ◽  
Author(s):  
Chang-Sheng Wang ◽  
Sabrina Monaco ◽  
Anh Ngoc Thai ◽  
Md. Shafiqur Rahman ◽  
Chen Wang ◽  
...  
Keyword(s):  
Catalytic System ◽  
Lewis Acid ◽  
Hydrogen Transfer ◽  
Acid Catalysis ◽  
Rate Limiting Step ◽  
Site Selectivity ◽  
Set Up ◽  
Site Selective ◽  
First Time ◽  
Rate Limiting

A catalytic system comprised of a cobalt-diphosphine complex and a Lewis acid (LA) such as AlMe3 has been found to promote hydrocarbofunctionalization reactions of alkynes with Lewis basic and electron-deficient substrates such as formamides, pyridones, pyridines, and azole derivatives through site-selective C-H activation. Compared with known Ni/LA catalytic system for analogous transformations, the present catalytic system not only feature convenient set up using inexpensive and bench-stable precatalyst and ligand such as Co(acac)3 and 1,3-bis(diphenylphosphino)propane (dppp), but also display distinct site-selectivity toward C-H activation of pyridone and pyridine derivatives. In particular, a completely C4-selective alkenylation of pyridine has been achieved for the first time. Mechanistic stidies including DFT calculations on the Co/Al-catalyzed addition of formamide to alkyne have suggested that the reaction involves cleavage of the carbamoyl C-H bond as the rate-limiting step, which proceeds through a ligand-to-ligand hydrogen transfer (LLHT) mechanism leading to an alkyl(carbamoyl)cobalt intermediate.

Three-Phase Electrochemistry of a Highly Lipophilic Neutral Ru-Complex Having a Tridentate Bis(benzimidazolate)pyridine Ligand

2020 ◽  
Author(s):  
Vishwanath R.S ◽  
Masa-aki Haga ◽  
Takumi Watanabe ◽  
Emilia Witkowska Nery ◽  
Martin Jönsson-Niedziolka
Keyword(s):  
Redox Potential ◽  
Organic Phase ◽  
Electron Donor ◽  
Ion Transfer ◽  
Neutral Complex ◽  
Pyridine Ligand ◽  
Electrochemical Testing ◽  
Ru Complex ◽  
Three Phase ◽  
Exceptional Stability

Here we describe the synthesis and electrochemical testing of a heteroleptic bis(tridentate) ruthenium(II) complex [Ru<sup>II</sup>(LR)(L)]<sup>0</sup> (LR =2,6-bis(1-(2-octyldodecan)benzimidazol-2-yl)pyridine, L = 2,6-bis(benzimidazolate)pyridine). It is a neutral complex which undergoes a quasireversible oxidation and reduction at relatively low potential. The newly synthetized compound was used for studies of ion-transfer at the three-phase junction because of the sensitivity of this method to cation expulsion. The [Ru<sup>II</sup>(LR)(L)]<sup>0</sup> shows exceptional stability during cycling and is sufficiently lipophilic even after oxidation to persist in the organic phase also using very hydrophilic anions such as Cl<sup>−</sup>. Given its low redox potential and strong lipophilicity this compound will be of interest as an electron donor in liquid-liquid electrochemistry.

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