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Titolo:
REACTION OF AN ELECTRON-RICH RADICAL-CATION WITH ELECTROGENERATED RADICALS IN INDIRECT ANODIC-OXIDATION
Autore:
MICHMAN M; ORON M;
Indirizzi:
HEBREW UNIV JERUSALEM,DEPT ORGAN CHEM IL-91904 JERUSALEM ISRAEL
Titolo Testata:
Electrochimica acta
fascicolo: 18, volume: 39, anno: 1994,
pagine: 2781 - 2787
SICI:
0013-4686(1994)39:18<2781:ROAERW>2.0.ZU;2-8
Fonte:
ISI
Lingua:
ENG
Soggetto:
HYDROXYL RADICALS; COMPLEXES; NUCLEOPHILES; SUBSTITUTION; CATALYSTS; PATHWAYS; ATTACK;
Keywords:
1,4-DI-TERT-BUTYL-2,5-DIMETHOXYBENZENE; RUTHENIUM TRIS-ACETYLACETONATE; ELECTROOXIDATION; CATALYSIS; 2,5-DI-TERT-BUTYL-1,4-BENZOQUINONE;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
49
Recensione:
Indirizzi per estratti:
Citazione:
M. Michman e M. Oron, "REACTION OF AN ELECTRON-RICH RADICAL-CATION WITH ELECTROGENERATED RADICALS IN INDIRECT ANODIC-OXIDATION", Electrochimica acta, 39(18), 1994, pp. 2781-2787

Abstract

1,4-Di-tert-butyl-2,5-dimethoxybenzene (A) reversibly forms a radical-cation (B) at E1/2a = 1.15 V (Pt, vs. Ag+ \AgCl (sat. ) KCl, 18-degrees-C) in dry and in aqueous acetonitrile. B is stable in many solvents,is unreactive towards nucleophiles but reacts readily with radicals. This special activity pattern appears to be characteristic of electronrich radical-cations and is utilized to investigate the linkage of catalysed electro-oxidation of water to organic electrooxidations. When electrolysis of A is conducted in presence of both water and either RuCl3 . 3H2O or Ru(acac) it reacts to yield 2,5-di-tert-butyl-1,4-benzoquinone (D), with practically 100% selectivity. RuCl3 . 3H2O and Ru(acac)3 are catalysts for the electrooxidation of water and the role of electrogenerated radicals in the process is indicated, in support of previous work. RuCl3 . 3H2O also catalyzes the homogeneous oxidation of Ato D by H2O2 in a semblance to the Fenton reaction.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 02/10/20 alle ore 01:31:28