Aminoxyl-Catalyzed Electrochemical Diazidation of Alkenes

2018 ◽  
Author(s):  
Juno C. Siu ◽  
Joseph B. Parry ◽  
Song Lin
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Single Electron ◽  
Group Transfer ◽  
Radical Group ◽  
Broad Scope ◽  
Catalytic Role

<p>We report the hypothesis-driven development of a new aminoxyl radical catalyst, CHAMPO, for the electrochemical diazidation of alkenes. Mediated by an anodically generated charge-transfer complex in the form of CHAMPO–N<sub>3</sub>, the radical diazidation was achieved across a broad scope of structurally diverse alkenes. Preliminary mechanistic data lend support for a dual catalytic role of the aminoxyl serving as both a single-electron oxidant and a radical group transfer agent.</p>

Aminoxyl-Catalyzed Electrochemical Diazidation of Alkenes

2018 ◽  
Author(s):  
Juno C. Siu ◽  
Joseph B. Parry ◽  
Song Lin
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Single Electron ◽  
Group Transfer ◽  
Radical Group ◽  
Broad Scope ◽  
Catalytic Role

<p>We report the hypothesis-driven development of a new aminoxyl radical catalyst, CHAMPO, for the electrochemical diazidation of alkenes. Mediated by an anodically generated charge-transfer complex in the form of CHAMPO–N<sub>3</sub>, the radical diazidation was achieved across a broad scope of structurally diverse alkenes. Preliminary mechanistic data lend support for a dual catalytic role of the aminoxyl serving as both a single-electron oxidant and a radical group transfer agent.</p>

Aminoxyl-Catalyzed Electrochemical Diazidation of Alkenes

2018 ◽  
Author(s):  
Juno C. Siu ◽  
Joseph B. Parry ◽  
Song Lin
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex ◽  
Single Electron ◽  
Group Transfer ◽  
Radical Group ◽  
Broad Scope ◽  
Catalytic Role

<p>We report the hypothesis-driven development of a new aminoxyl radical catalyst, CHAMPO, for the electrochemical diazidation of alkenes. Mediated by an anodically generated charge-transfer complex in the form of CHAMPO–N<sub>3</sub>, the radical diazidation was achieved across a broad scope of structurally diverse alkenes. Preliminary mechanistic data lend support for a dual catalytic role of the aminoxyl serving as both a single-electron oxidant and a radical group transfer agent.</p>

scholarly journals Graphene catalyzes the reversible formation of a C–C bond between two molecules

2018 ◽  
Vol 4 (12) ◽  
pp. eaau9366 ◽  
Author(s):  
J. J. Navarro ◽  
M. Pisarra ◽  
B. Nieto-Ortega ◽  
J. Villalva ◽  
C. G. Ayani ◽  
...  
Keyword(s):  
Charge Transfer ◽  
Transition Metal ◽  
Chemical Reaction ◽  
Transition Metal Catalysts ◽  
Magnetic Switch ◽  
Kondo Resonance ◽  
Efficient Charge ◽  
Catalytic Role ◽  
Reversible Formation

Carbon deposits are well-known inhibitors of transition metal catalysts. In contrast to this undesirable behavior, here we show that epitaxial graphene grown on Ru(0001) promotes the reversible formation of a C–C bond between −CH2CN and 7,7,8,8-tetracyano-p-quinodimethane (TCNQ). The catalytic role of graphene is multifaceted: First, it allows for an efficient charge transfer between the surface and the reactants, thus favoring changes in carbon hybridization; second, it holds the reactants in place and makes them reactive. The reaction is fully reversible by injecting electrons with an STM tip on the empty molecular orbitals of the product. The making and breaking of the C–C bond is accompanied by the switching off and on of a Kondo resonance, so that the system can be viewed as a reversible magnetic switch controlled by a chemical reaction.

The role of the charge-transfer complex during the copolymerization of N-vinylpyrrolidone and maleic anhydride

1992 ◽  
Vol 25 (23) ◽  
pp. 6302-6308 ◽  
Author(s):  
G. Georgiev ◽  
Kh. Konstantinov ◽  
V. Kabaivanov
Keyword(s):  
Charge Transfer ◽  
Maleic Anhydride ◽  
Charge Transfer Complex

scholarly journals The Role of the Charge-transfer Complex in the Photocopolymerization of Oxygen with Styrene and α-Methylstyrene

1978 ◽  
Vol 51 (5) ◽  
pp. 1487-1489 ◽  
Author(s):  
Toshiyuki Kodaira ◽  
Kohzoh Hashimoto ◽  
Yoshihiko Sakanaka ◽  
Sumio Tanihata ◽  
Katsuki Ikeda
Keyword(s):  
Charge Transfer ◽  
Charge Transfer Complex

Formation of charge transfer complex between metalloporphyrins and aromatic solvents in tetrahydrofuran media: A density functional study

2019 ◽  
Vol 23 (10) ◽  
pp. 1149-1157 ◽  
Author(s):  
Somnath Chowdhury ◽  
Prajna Mukherjee ◽  
Monoj Das ◽  
Bikash C. Gupta
Keyword(s):  
Charge Transfer ◽  
Hybrid System ◽  
Energy Minimization ◽  
Density Functional ◽  
Charge Transfer Complex ◽  
Functional Study ◽  
Aromatic Solvents ◽  
Ct Complexes ◽  
Formation Of Complexes

We have investigated the possible formation of charge transfer (CT) complexes of metallotetraphenylporphyrins (MTPhP with M = Mn, Fe, Co, Ni and Cu) and metallooctaethylporphyrins (MOEtP with M = Mn, Fe, Co, Ni, Cu and Zn) with the aromatic solvents, namely benzene, chlorobenzene, benzonitrile and toluene, respectively, in the tetrahydrofuran (THF) media. We have carried out energy minimization calculations of the hybrid systems (metalloporphyrins and aromatic solvents) in 1:1 and 1:2 stoichiometry in presence of THF media. We have analyzed the role of metal present in the metalloporphyrin in the formation of complexes for both 1:1 and 1:2 stoichiometry. Our analysis reveals that the MTPhP-solvent hybrid system is more stable compared to the MOEtP-solvent hybrid system.

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