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Titolo:
Kinetic studies on the interactions of manganese-porphyrins with peraceticacid. Part 1. Epoxidation of alkenes and hydroxylation of aromatic rings
Autore:
Banfi, S; Cavazzini, M; Pozzi, G; Barkanova, SV; Kaliya, OL;
Indirizzi:
CNR, Dipartimento Chim Organ & Ind, I-20135 Milan, Italy CNR Milan ItalyI-20135 artimento Chim Organ & Ind, I-20135 Milan, Italy CNR, Ctr Studio Sintesi & Stereochim Speciale Sistemi, I-20135 Milan, Italy CNR Milan Italy I-20135 tereochim Speciale Sistemi, I-20135 Milan, Italy Organ Intermediates & Dyes Inst, Moscow 103787, Russia Organ Intermediates& Dyes Inst Moscow Russia 103787 scow 103787, Russia
Titolo Testata:
JOURNAL OF THE CHEMICAL SOCIETY-PERKIN TRANSACTIONS 2
, volume: 4, anno: 2000,
pagine: 871 - 877
SICI:
0300-9580(2000)4:<871:KSOTIO>2.0.ZU;2-J
Fonte:
ISI
Lingua:
ENG
Soggetto:
ALKYL HYDROPEROXIDES; OXYGEN-TRANSFER; AQUEOUS-SOLUTION; CATALYZED OXIDATION; PERCARBOXYLIC ACIDS; MECHANISM; COMPLEXES; IRON; METALLOPORPHYRINS; CYTOCHROME-P-450;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Banfi, S Univ Insurbia, Dipartimento Biol Strutturale & Funz, Via Dunant 3, I-21100Varese, Italy Univ Insurbia Via Dunant 3 Varese Italy I-21100 100Varese, Italy
Citazione:
S. Banfi et al., "Kinetic studies on the interactions of manganese-porphyrins with peraceticacid. Part 1. Epoxidation of alkenes and hydroxylation of aromatic rings", J CHEM S P2, 4, 2000, pp. 871-877

Abstract

The mechanism of peracetic acid interactions with Mn-III complexes of meso-tetra(2,6-dichloro-4-R-phenyl)porphyrins (RTDCPPMnCl; R=CH3O, H, Br, Cl orNO2) in acetonitrile-acetic acid has been studied. Analysis of the kineticdata revealed that both in cis-stilbene epoxidation and naphthalene hydroxylation the first step of the reaction is the reversible formation of an intermediate adduct 'A' between the catalyst and the oxidant. The subsequent irreversible transformation of 'A' with rate constant k(2) leads to the formation of two high-valent oxometallo species, [RTDCPPMnV(O)] and supposedly[RTDCPPMnIV(O)](+.). These species are in equilibrium and show distinct oxidation abilities towards the substrates.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 30/11/20 alle ore 16:24:27