Behavior of alkyl radical pairs in urea channels

1989 ◽  
Vol 93 (4) ◽  
pp. 1666-1670 ◽  
Author(s):  
H. L. Casal ◽  
D. Griller ◽  
R. J. Kolt ◽  
F. W. Hartstock ◽  
D. M. Northcott ◽  
...  
Keyword(s):  
Alkyl Radical ◽  
Radical Pairs

Influence of Micelles and Magnetic Isotopes on Magnetic Field Dependence of Lifetimes of Benzophenone Ketyl-Alkyl Radical Pairs

1997 ◽  
Vol 26 (5) ◽  
pp. 435-436 ◽  
Author(s):  
Yoshihisa Fujiwara ◽  
Kohji Yoda ◽  
Takeshi Aoki ◽  
Yoshifumi Tanimoto
Keyword(s):  
Magnetic Field ◽  
Field Dependence ◽  
Alkyl Radical ◽  
Magnetic Field Dependence ◽  
Radical Pairs

Photolysis of peresters. Reactions of alkoxy-alkyl radical pairs in solution

1970 ◽  
Vol 92 (17) ◽  
pp. 5175-5186 ◽  
Author(s):  
Roger A. Sheldon ◽  
Jay K. Kochi
Keyword(s):  
Alkyl Radical ◽  
Radical Pairs

Visible-Light Photosensitized Aryl and Alkyl Decarboxylative Carbon-Heteroatom and Carbon-Carbon Bond Formations

2019 ◽  
Author(s):  
Tuhin Patra ◽  
Satobhisha Mukherjee ◽  
Jiajia Ma ◽  
Felix Strieth-Kalthoff ◽  
Frank Glorius
Keyword(s):  
Energy Transfer ◽  
Visible Light ◽  
Alkyl Radical ◽  
General Strategy ◽  
Alkyl Radicals ◽  
Bond Forming ◽  
Radical Trapping ◽  
Carbon Carbon Bond ◽  
Radical Generation ◽  
Trapping Agent

<sub>A general strategy to access both aryl and alkyl radicals by photosensitized decarboxylation of the corresponding carboxylic acids esters has been developed. An energy transfer mediated homolysis of unsymmetrical sigma-bonds for a concerted fragmentation/decarboxylation process is involved. As a result, an independent aryl/alkyl radical generation step enables a series of key C-X and C-C bond forming reactions by simply changing the radical trapping agent.</sub>

scholarly journals A cross-dehydrogenative C(sp3)−H heteroarylation via photo-induced catalytic chlorine radical generation

2021 ◽  
Vol 12 (1) ◽  
Author(s):  
Chia-Yu Huang ◽  
Jianbin Li ◽  
Chao-Jun Li
Keyword(s):  
Hydrogen Atom ◽  
Hydrogen Evolution ◽  
Alkyl Radical ◽  
Cobalt Catalyst ◽  
Alkylation Reaction ◽  
Hydrogen Atom Abstraction ◽  
Dehydrogenative Coupling ◽  
Radical Generation ◽  
Limited Scope

AbstractHydrogen atom abstraction (HAT) from C(sp3)–H bonds of naturally abundant alkanes for alkyl radical generation represents a promising yet underexplored strategy in the alkylation reaction designs since involving stoichiometric oxidants, excessive alkane loading, and limited scope are common drawbacks. Here we report a photo-induced and chemical oxidant-free cross-dehydrogenative coupling (CDC) between alkanes and heteroarenes using catalytic chloride and cobalt catalyst. Couplings of strong C(sp3)–H bond-containing substrates and complex heteroarenes, have been achieved with satisfactory yields. This dual catalytic platform features the in situ engendered chlorine radical for alkyl radical generation and exploits the cobaloxime catalyst to enable the hydrogen evolution for catalytic turnover. The practical value of this protocol was demonstrated by the gram-scale synthesis of alkylated heteroarene with merely 3 equiv. alkane loading.

scholarly journals Iron‐Catalyzed Tertiary Alkylation of Terminal Alkynes with 1,3‐Diesters via a Functionalized Alkyl Radical

2021 ◽  
Vol 133 (17) ◽  
pp. 9792-9797
Author(s):  
Ming‐Qing Tian ◽  
Zhen‐Yao Shen ◽  
Xuefei Zhao ◽  
Patrick J. Walsh ◽  
Xu‐Hong Hu
Keyword(s):  
Alkyl Radical ◽  
Terminal Alkynes
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