ChemInform Abstract: MECHANISMS OF THE ELECTROHYDRODIMERIZATION OF ACTIVATED OLEFINS. IV. THE PROTONATION OF METHYL CINNAMATE ANION RADICAL

1981 ◽  
Vol 12 (50) ◽  
Author(s):  
V. D. PARKER
Keyword(s):  
Anion Radical ◽  
Methyl Cinnamate ◽  
Activated Olefins

scholarly journals Mechanisms of the Electrohydrodimerization of Activated Olefins. IV. The Protonation of Methyl Cinnamate Anion Radical.

1981 ◽  
Vol 35b ◽  
pp. 295-301 ◽  
Author(s):  
Vernon D. Parker ◽  
Ann-Marie Eklund ◽  
Toshiaki Nishida ◽  
Curt R. Enzell ◽  
Curt R. Enzell
Keyword(s):  
Anion Radical ◽  
Methyl Cinnamate ◽  
Activated Olefins

scholarly journals Mechanisms of the Electrohydrodimerization of Activated Olefins. V. Substituted Benzylidene Meldrum's Acid Anion Radical Reactions in the Presence of Acetic Acid.

1982 ◽  
Vol 36b ◽  
pp. 260-262 ◽  
Author(s):  
Paul Margaretha ◽  
Vernon D. Parker ◽  
S.-O. Lawesson ◽  
Toshiaki Nishida ◽  
Curt R. Enzell ◽  
...  
Keyword(s):  
Acetic Acid ◽  
Anion Radical ◽  
Radical Reactions ◽  
Meldrum's Acid ◽  
Acid Anion ◽  
Meldrum’S Acid ◽  
Activated Olefins

scholarly journals Mechanisms of the Electrohydrodimerization of Activated Olefins. VI. Cyclohydrodimerization of p-Methylbenzylidene Malononitrile Anion Radical.

1982 ◽  
Vol 36b ◽  
pp. 225-234 ◽  
Author(s):  
Olav Lerflaten ◽  
Vernon D. Parker ◽  
Rolf Hove ◽  
Bengt Lindberg ◽  
Sune Rosell ◽  
...  
Keyword(s):  
Anion Radical ◽  
Activated Olefins

scholarly journals Mechanisms of the Electrodimerization of Activated Olefins. VIII. Negative Activation Enthalpies in the Dimerization of Diethyl Fumarate Anion Radical.

1985 ◽  
Vol 39b ◽  
pp. 445-451 ◽  
Author(s):  
Morten Svaan ◽  
Vernon D. Parker ◽  
Jyoti Chattopadhyaya ◽  
Ulf Ragnarsson ◽  
Gotfryd Kupryszewski ◽  
...  
Keyword(s):  
Anion Radical ◽  
Activated Olefins

Superoxide Anion Radical: Generation and Detection in Cellular and Non-Cellular Systems

2015 ◽  
Vol 22 (37) ◽  
pp. 4234-4256 ◽  
Author(s):  
Renan Chiste ◽  
Marisa Freitas ◽  
Adriana Mercadante ◽  
Eduarda Fernandes
Keyword(s):  
Superoxide Anion ◽  
Anion Radical ◽  
Cellular Systems ◽  
Superoxide Anion Radical ◽  
Radical Generation

Electrochemical reduction of para-substituted 2-acyl-5-phenylfuranes in dimethylformamide

1981 ◽  
Vol 46 (2) ◽  
pp. 498-502 ◽  
Author(s):  
Jozef Černák ◽  
František Tomanovič ◽  
Andrej Staško ◽  
Anna Fedosyevna Oleinikova ◽  
Jaroslav Kováč
Keyword(s):  
Electrochemical Reduction ◽  
Unpaired Electron ◽  
Anion Radical ◽  
Electron Wave ◽  
Epr Method ◽  
Electron Center ◽  
Nitrogen Nucleus ◽  
Nitro Derivatives ◽  
Stable Anion ◽  
Derivatives Of

para Substituted chloro, bromo, and nitro derivatives of 2-acyl-5-phenylfurane are reduced polarographically in a one-electron wave to the corresponding anion radicals, which were studied by the EPR method. The reduction of nitro derivatives, studied by the Kalousek switch, is reversible and leads to a stable anion radical with an unpaired electron center on the nitrogen nucleus; the reduction of the halogen derivatives is only partly reversible and leads to unstable ketyl radicals. The bromo derivatives give polarographic maxima typical for concurrent reactions.

[OsH4(PPh3)3]: New Catalyst for the Selective Cyclopropanation of Activated Olefins

1996 ◽  
Vol 61 (12) ◽  
pp. 1798-1804 ◽  
Author(s):  
Albert Demonceau ◽  
François Simal ◽  
Corine A. Lemoine ◽  
Alfred F. Noels ◽  
Igor T. Chizhevsky ◽  
...  
Keyword(s):  
Title Compound ◽  
Efficient Catalyst ◽  
Ethyl Diazoacetate ◽  
Styrene Derivatives ◽  
Activated Olefins ◽  
Cyclic Alkenes

The title compound was found to be an efficient catalyst for the selective cyclopropanation of activated olefins by ethyl diazoacetate. The cyclopropane yields range from moderate to good (75 to 95%) for activated olefins such as styrene and styrene derivatives, but are rather low (20 to 30%) for non-activated olefins such as terminal and cyclic alkenes. In the intermolecular competition, styrene was 45 times more reactive than cyclooctene. In all cases, trans (exo) cyclopropane predominated over the cis (endo) isomer.

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