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Titolo:
Study of the selective catalysis of metalloporphyrins for 2-methyl-butane oxidation with PhIO under mild conditions
Autore:
Guo, CC; Huang, G; Li, ZP; Song, JX;
Indirizzi:
Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Peoples R China Hunan Univ Changsha Peoples R China 410082 ngsha 410082, Peoples R China
Titolo Testata:
JOURNAL OF MOLECULAR CATALYSIS A-CHEMICAL
fascicolo: 1-2, volume: 170, anno: 2001,
pagine: 43 - 49
SICI:
1381-1169(20010514)170:1-2<43:SOTSCO>2.0.ZU;2-G
Fonte:
ISI
Lingua:
ENG
Soggetto:
CYCLOHEXANE HYDROXYLATION; IRON-PORPHYRINS; OXYGEN; CYTOCHROME-P-450; IODOSYLBENZENE; COMPLEXES; MECHANISM; SYSTEM;
Keywords:
porphyrins; oxidation; 2-methyl-butane; catalysis; selectivity;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
27
Recensione:
Indirizzi per estratti:
Indirizzo: Guo, CC Hunan Univ, Coll Chem & Chem Engn, Changsha 410082, Peoples R China Hunan Univ Changsha Peoples R China 410082 0082, Peoples R China
Citazione:
C.C. Guo et al., "Study of the selective catalysis of metalloporphyrins for 2-methyl-butane oxidation with PhIO under mild conditions", J MOL CAT A, 170(1-2), 2001, pp. 43-49

Abstract

Nine ironporphyrins and eight manganeseporphyrins were synthesized, and their selective catalysis for the oxidation of the secondary and tertiary carbon-hydrogen bonds of 2-methyl-butane with PhIO was studied. The proportionof the oxidation product of tertiary carbon-hydrogen bond to the one of secondary carbon-hydrogen bond was 3:1 when ironporphyrins were used as catalysts, and 2.3:1 when manganeseporphyrins were used as catalysts. The research showed that the substituting groups on the porphyrin rings influenced the catalytic selectivity of metalloporphyrins for the oxidation of the secondary and tertiary carbon-hydrogen bonds as well as the reaction yields. Theelectron-attracting groups on benzene rings of ironporphyrins increased the catalytic selectivity of ironporphyrins for the tertiary carbon-hydrogen bond oxidation and the reaction speeds, and the electron-releasing groups increased the catalytic selectivity for secondary carbon-hydrogen bond oxidation and reduced the reaction speeds. Both electron-attracting and -releasing groups on benzene rings of manganeseporphyrins enhanced the catalytic selectivity of manganeseporphyrins for the secondary carbon-hydrogen bond oxidation. (C) 2001 Elsevier Science B.V. All rights reserved.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 20:31:55