Two paths for stabilization of intermediate radical arylation of thioamides

1981 ◽  
Vol 30 (5) ◽  
pp. 925-927
Author(s):  
I. I. Kandror ◽  
I. O. Bragina ◽  
R. Kh. Freidlina
Keyword(s):  
Intermediate Radical ◽  
Radical Arylation

Reductive cleavage mechanism of diphenyl ether and apparent ipso trapping of an intermediate radical anion with a silyl ether

1982 ◽  
Vol 47 (22) ◽  
pp. 4250-4254 ◽  
Author(s):  
Kundanbhai M. Patel ◽  
Richard J. Baltisberger ◽  
Virgil I. Stenberg ◽  
Neil F. Woolsey
Keyword(s):  
Radical Anion ◽  
Diphenyl Ether ◽  
Reductive Cleavage ◽  
Silyl Ether ◽  
Intermediate Radical

ChemInform Abstract: Free-Radical Arylation of Cubane Using Cubyl Lead Acylates.

ChemInform ◽  
1990 ◽  
Vol 21 (11) ◽  
Author(s):  
R. M. MORIARTY ◽  
J. S. KHOSROWSHAHI ◽  
R. S. MILLER ◽  
J. L. FLIPPEN-ANDERSON ◽  
R. GILARDI
Keyword(s):  
Free Radical ◽  
Radical Arylation

scholarly journals Selective 13C labelling reveals the electronic structure of flavocoenzyme radicals

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Erik Schleicher ◽  
Stephan Rein ◽  
Boris Illarionov ◽  
Ariane Lehmann ◽  
Tarek Al Said ◽  
...  
Keyword(s):  
Electronic Structure ◽  
Blue Light ◽  
Density Functional ◽  
Double Resonance ◽  
Density Functional Theory Calculations ◽  
Microwave Frequency ◽  
Fine Tuning ◽  
Electron Nuclear Double Resonance ◽  
Intermediate Radical ◽  
Wide Range

AbstractFlavocoenzymes are nearly ubiquitous cofactors that are involved in the catalysis and regulation of a wide range of biological processes including some light-induced ones, such as the photolyase-mediated DNA repair, magnetoreception of migratory birds, and the blue-light driven phototropism in plants. One of the factors that enable versatile flavin-coenzyme biochemistry and biophysics is the fine-tuning of the cofactor’s frontier orbital by interactions with the protein environment. Probing the singly-occupied molecular orbital (SOMO) of the intermediate radical state of flavins is therefore a prerequisite for a thorough understanding of the diverse functions of the flavoprotein family. This may be ultimately achieved by unravelling the hyperfine structure of a flavin by electron paramagnetic resonance. In this contribution we present a rigorous approach to obtaining a hyperfine map of the flavin’s chromophoric 7,8-dimethyl isoalloxazine unit at an as yet unprecedented level of resolution and accuracy. We combine powerful high-microwave-frequency/high-magnetic-field electron–nuclear double resonance (ENDOR) with 13C isotopologue editing as well as spectral simulations and density functional theory calculations to measure and analyse 13C hyperfine couplings of the flavin cofactor in DNA photolyase. Our data will provide the basis for electronic structure considerations for a number of flavin radical intermediates occurring in blue-light photoreceptor proteins.

Improved insight into catalytic reactions by kinetic modelling and LIF detection of intermediate radical species

1989 ◽  
pp. 424-425
Author(s):  
E. Fridell ◽  
B. Hellsing ◽  
S. Ljungström ◽  
T. Wahnström ◽  
A. Rosé ◽  
...  
Keyword(s):  
Kinetic Modelling ◽  
Catalytic Reactions ◽  
Radical Species ◽  
Intermediate Radical ◽  
Insight Into

ChemInform Abstract: RADICAL ARYLATION OF THIOAMIDES

1980 ◽  
Vol 11 (25) ◽  
Author(s):  
I. I. KANDROR ◽  
I. O. BRAGINA ◽  
R. KH. FREIDLINA
Keyword(s):  
Radical Arylation

scholarly journals Arylation of gem-difluoroalkenes using a Pd/Cu Co-catalytic system that avoids β-fluoride elimination

2021 ◽  
Author(s):  
Kedong Yuan ◽  
Taisiia Feoktistova ◽  
Paul Ha-Yeon Cheong ◽  
Ryan A. Altman
Keyword(s):  
Catalytic System ◽  
Insertion Sequence ◽  
Radical Arylation ◽  
Migratory Insertion

PdII/CuI co-catalyze a desulfitative arylation of aliphatic gem-difluoroalkenes in a radical arylation/migratory insertion sequence that avoids β-F elimination.

ChemInform Abstract: RADICAL ARYLATION OF ACETYL-SUBSTITUTED THIOUREAS

1983 ◽  
Vol 14 (21) ◽  
Author(s):  
L. V. YASHKINA ◽  
B. V. KOPYLOVA ◽  
V. I. DOSTOVALOVA ◽  
R. KH. FREIDLINA
Keyword(s):  
Radical Arylation

ChemInform Abstract: Oxidative Radical Arylation of Anilines with Arylhydrazines and Dioxygen from Air.

ChemInform ◽  
2014 ◽  
Vol 45 (34) ◽  
pp. no-no
Author(s):  
Josefa Hofmann ◽  
Hannelore Jasch ◽  
Markus R. Heinrich
Keyword(s):  
Radical Arylation
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