scholarly journals First d0 Metal-Catalyzed Alkyl–Alkyl Cross Coupling Enabled by a Redox-Active Ligand

2021 ◽  
Author(s):  
Roman Belli ◽  
Victoria Tafuri ◽  
Matthew Joannou ◽  
Courtney Roberts
Keyword(s):  
Cross Coupling ◽  
Metal Catalysis ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Beta Hydride Elimination ◽  
Hydride Elimination ◽  
Late Transition ◽  
Metal Catalyzed ◽  
Insight Into

Alkyl–alkyl cross coupling through well-defined mechanisms that allow for controlled oxidative addition, prevent beta-hydride elimination, and tolerate hindered electrophiles are still challenging. We describe the first report of a redox-active ligand-enabled alkyl–alkyl cross coupling using a d0 metal. This (tris)amido ScIII complex as well as the oxidized variant are thor-oughly characterized (NMR, X-ray, EPR, CV, UV-Vis, DFT). Insight into the likely radical nature of the mechanism is dis-closed. Additionally, a substrate scope that includes functional groups incompatible with late transition metal catalysis, and both coupling partners bearing beta-hydrogens is reported.

Reactivity of Aluminum Complexes of Redox-Active Ligand toward N-Heterocyclic Carbene and Its Thione

2019 ◽  
Vol 39 (1) ◽  
pp. 66-73 ◽  
Author(s):  
Vladimir G. Sokolov ◽  
Tatyana S. Koptseva ◽  
Roman V. Rumyantcev ◽  
Xiao-Juan Yang ◽  
Yanxia Zhao ◽  
...  
Keyword(s):  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Aluminum Complexes

POSSIBILITY OF MOLECULAR-SWITCH WITH CONTROLLED HYDROGEN BOND: UTILITY OF COMBINATION OF 2,2′-BIIMIDAZOLE AND REDOX-ACTIVE LIGAND

2005 ◽  
Vol 04 (01) ◽  
pp. 333-344 ◽  
Author(s):  
HIROTOSHI MORI ◽  
EISAKU MIYOSHI
Keyword(s):  
Density Functional ◽  
Molecular Level ◽  
Molecular Switch ◽  
Vibration Band ◽  
Functional Theory ◽  
Inorganic Molecule ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Stretching Vibration

A new inorganic molecule [ Co(Hbim) ( C 6 H 4 O 2)( NH 3)2]2 that can be used as a new optically durable molecular switch was theoretically designed in the framework of density functional theory. Three stable minima, belonging to 1 A g , 5 A 1, and 9 A g states, were found in the complex. Theoretically predicted infrared spectra of the complexes showed that a strong peak of NH stretching vibration is observed at 2690, 2120, and 2770 cm -1 in the 1 A g , 5 A 1, and 9 A g states, respectively. The apparent red shift of the NH stretching vibration band in the 5 A 1 state make it possible to distinguish the electronic state from others (1 A g and 9 A g ). This means that the complex can be used as a molecular level switch whose memory can be stably read by IR light without any photoreaction process; namely, without memory degradation.

Isolation of a uranium(iii) benzophenone ketyl radical that displays redox-active ligand behaviour

2014 ◽  
Vol 43 (48) ◽  
pp. 17885-17888 ◽  
Author(s):  
Ellen M. Matson ◽  
John J. Kiernicki ◽  
Nickolas H. Anderson ◽  
Phillip E. Fanwick ◽  
Suzanne C. Bart
Keyword(s):  
Ketyl Radical ◽  
Radical Complex ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Reducing Equivalents

The first uranium(iii) charge separated ketyl radical complex, Tp*2U(OC·Ph2), has been isolated and acts as a potent two-electron reductant with reducing equivalents derived from both uranium and the redox-active benzophenone.

Metal–Organic Frameworks Derived from Calcium and Strontium Complexes of a Redox-Active Ligand

2021 ◽  
Vol 60 (5) ◽  
pp. 3238-3248
Author(s):  
Natalia L. Bazyakina ◽  
Valentin M. Makarov ◽  
Sergey Yu. Ketkov ◽  
Artem S. Bogomyakov ◽  
Roman V. Rumyantcev ◽  
...  
Keyword(s):  
Metal Organic Frameworks ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active ◽  
Metal Organic

Catalytic nitrene transfer by a zirconium(iv) redox-active ligand complex

2011 ◽  
Vol 2 (1) ◽  
pp. 166-169 ◽  
Author(s):  
Andy I. Nguyen ◽  
Ryan A. Zarkesh ◽  
David C. Lacy ◽  
Megan K. Thorson ◽  
Alan F. Heyduk
Keyword(s):  
Ligand Complex ◽  
Nitrene Transfer ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

Synthesis and properties of a redox active ligand with bispicorylamino groups and its dinuclear complex

Polyhedron ◽  
2007 ◽  
Vol 26 (9-11) ◽  
pp. 2174-2178 ◽  
Author(s):  
Masafumi Yano ◽  
Masayuki Fujita ◽  
Masaya Miyake ◽  
Masakazu Tatsumi ◽  
Tatsuo Yajima ◽  
...  
Keyword(s):  
Dinuclear Complex ◽  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

scholarly journals Correction: Redox-active ligand based Mn(i)-catalyst for hydrosilylative ester reduction

2022 ◽  
Author(s):  
Soumi Chakraborty ◽  
Arpan Das ◽  
Swadhin K. Mandal
Keyword(s):  
Redox Active Ligand ◽  
Active Ligand ◽  
Redox Active

Correction for ‘Redox-active ligand based Mn(i)-catalyst for hydrosilylative ester reduction’ by Soumi Chakraborty et al., Chem. Commun., 2021, 57, 12671–12674, DOI: 10.1039/D1CC05614J.

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