Theory of chemical bonds in metalloenzymes. XV. Local singlet and triplet diradical mechanisms for radical coupling reactions in the oxygen evolution complex

2010 ◽  
Vol 110 (15) ◽  
pp. 3101-3128 ◽  
Author(s):  
Kizashi Yamaguchi ◽  
Mitsuo Shoji ◽  
Toru Saito ◽  
Hiroshi Isobe ◽  
Satomichi Nishihara ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Coupling Reactions ◽  
Chemical Bonds ◽  
Radical Coupling ◽  
Theory Of Chemical Bonds

Theory of chemical bonds in metalloenzymes - Manganese oxides clusters in the oxygen evolution center -

2012 ◽  
Author(s):  
K. Yamaguchi ◽  
M. Shoji ◽  
T. Saito ◽  
H. Isobe ◽  
S. Yamada ◽  
...  
Keyword(s):  
Oxygen Evolution ◽  
Manganese Oxides ◽  
Chemical Bonds ◽  
Theory Of Chemical Bonds

The electron-transfer intermediates of the oxygen evolution reaction (OER) as polarons by in situ spectroscopy

2021 ◽  
Author(s):  
Hanna Lyle ◽  
Suryansh Singh ◽  
Michael Paolino ◽  
Ilya Vinogradov ◽  
Tanja Cuk
Keyword(s):  
Electron Transfer ◽  
Oxygen Evolution ◽  
Oxygen Evolution Reaction ◽  
Catalytic Reactions ◽  
In Situ Spectroscopy ◽  
Chemical Bonds

The conversion of diffusive forms of energy (electrical and light) into short, compact chemical bonds by catalytic reactions regularly involves moving a carrier from an environment that favors delocalization to one that favors localization.

Room-Temperature, Water-Promoted, Radical-Coupling Reactions of Phenols with tert-Butyl Nitrite

Synlett ◽  
2017 ◽  
Vol 28 (16) ◽  
pp. 2153-2156 ◽  
Author(s):  
Wen-Ting Wei ◽  
Hongze Liang ◽  
Wen-Ming Zhu ◽  
Weida Liang ◽  
Yi Wu ◽  
...  
Keyword(s):  
Room Temperature ◽  
Coupling Reaction ◽  
Cross Coupling ◽  
Coupling Reactions ◽  
Phenol Derivative ◽  
Tert Butyl ◽  
Radical Coupling ◽  
Air Atmosphere ◽  
Cross Coupling Reaction ◽  
Temperature Water

A radical–radical cross-coupling reaction of phenols with tert-butyl nitrite has been developed with the use of water as an additive. This method allows the construction of C–N bonds under an air atmosphere at room temperature, providing the ortho-nitrated phenol derivative in moderate to good yields.

Via Radical Coupling Reactions

2003 ◽  
pp. 1
Author(s):  
E. P. Kündig ◽  
S. H. Pache
Keyword(s):  
Coupling Reactions ◽  
Radical Coupling

Theory of chemical bonds in metalloenzymes II: Hybrid-DFT studies in iron-sulfur clusters

2005 ◽  
Vol 105 (6) ◽  
pp. 628-644 ◽  
Author(s):  
M. Shoji ◽  
K. Koizumi ◽  
Y. Kitagawa ◽  
S. Yamanaka ◽  
T. Kawakami ◽  
...  
Keyword(s):  
Chemical Bonds ◽  
Dft Studies ◽  
Iron Sulfur Clusters ◽  
Iron Sulfur ◽  
Theory Of Chemical Bonds

scholarly journals Radical coupling reactions of piceatannol and monolignols: A density functional theory study

2019 ◽  
Vol 164 ◽  
pp. 12-23 ◽  
Author(s):  
Thomas Elder ◽  
José Carlos del Río ◽  
John Ralph ◽  
Jorge Rencoret ◽  
Hoon Kim ◽  
...  
Keyword(s):  
Density Functional Theory ◽  
Density Functional ◽  
Coupling Reactions ◽  
Density Functional Theory Study ◽  
Functional Theory ◽  
Radical Coupling

Recent Developments in Transition-Metal-Free Functionalization and Derivatization Reactions of Pyridines

Synlett ◽  
2020 ◽  
Author(s):  
Lei Jiao ◽  
Fei-Yu Zhou
Keyword(s):  
Transition Metal ◽  
Structural Motif ◽  
Metal Exchange ◽  
Coupling Reactions ◽  
Phosphonium Salts ◽  
Metal Free ◽  
Radical Coupling ◽  
In Situ Activation ◽  
Recent Developments

AbstractPyridine is an important structural motif that is prevalent in natural products, drugs, and materials. Methods that functionalize and derivatize pyridines have gained significant attention. Recently, a large number of transition-metal-free reactions have been developed. In this review, we provide a brief summary of recent advances in transition-metal-free functionalization and derivatization reactions of pyridines, categorized according to their reaction modes.1 Introduction2 Metalated Pyridines as Nucleophiles2.1 Deprotonation2.2 Halogen–Metal exchange3 Activated Pyridines as Electrophiles3.1 Asymmetric 2-Allylation by Chiral Phosphite Catalysis3.2 Activation of Pyridines by a Bifunctional Activating Group3.3 Alkylation of Pyridines by 1,2-Migration3.4 Alkylation of Pyridines by [3+2] Addition3.5 Pyridine Derivatization by Catalytic In Situ Activation Strategies3.6 Reactions via Heterocyclic Phosphonium Salts4 Radical Reactions for Pyridine Functionalization4.1 Pyridine Functionalization through Radical Addition Reactions4.2 Pyridine Functionalization through Radical–Radical Coupling Reactions5 Derivatization of Pyridines through the Formation of Meisenheimer-Type Pyridyl Anions6 Conclusion

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