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Titolo:
Ruthenium-oxo and -tosylimido porphyrin complexes for epoxidation and aziridination of alkenes
Autore:
Che, CM; Yu, WY;
Indirizzi:
Univ Hong Kong, Dept Chem, Hong Kong, Hong Kong Univ Hong Kong Hong KongHong Kong ong, Dept Chem, Hong Kong, Hong Kong
Titolo Testata:
PURE AND APPLIED CHEMISTRY
fascicolo: 2, volume: 71, anno: 1999,
pagine: 281 - 288
SICI:
0033-4545(199902)71:2<281:RA-PCF>2.0.ZU;2-6
Fonte:
ISI
Lingua:
ENG
Soggetto:
HIGHLY EFFICIENT EPOXIDATION; N-OXIDES; AEROBIC EPOXIDATION; IRON PORPHYRINS; OXIDATION; OLEFINS; CATALYSTS; ALCOHOLS; OSMIUM; REACTIVITY;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Citazioni:
39
Recensione:
Indirizzi per estratti:
Indirizzo: Che, CM Univ Hong Kong, Dept Chem, Pokfulam Rd, Hong Kong, Hong Kong Univ Hong Kong Pokfulam Rd Hong Kong Hong Kong g Kong, Hong Kong
Citazione:
C.M. Che e W.Y. Yu, "Ruthenium-oxo and -tosylimido porphyrin complexes for epoxidation and aziridination of alkenes", PUR A CHEM, 71(2), 1999, pp. 281-288

Abstract

Dioxoruthenium(VI) porphyrins including those containing chiral porphyrinato ligands can be readily prepared by oxidation of [Ru-II(Por)(CO)(MeOH)] with PhIO or metachloroperoxybenzoic acid. Similar reactions with PhINTs gave [Ru-VI(Por)(NTs)(2)] isolated as air stable solids at room temperature. The [Ru-VI(Por)O-2] complexes are competent oxidants for epoxidation of alkenes with high selectivities. Enantioselective epoxidation of alkenes givingthe corresponding organic epoxides with moderate to good enantioselectivites have also been achieved using chiral [Ru-VI(D-4-Por*)O-2] [D-4-H(2)Por* = 5 10,15,20-tetrakis-(1S,4R,5R,8S-1,2,3,4,5,6,7,8-octahydro-1,4:5,8-dimethanoanthracen-9-yl)porphyrin] and [Ru-VI(D-2-Por*)O-2] complexes. The mechanism of alkene epoxidation by [Ru-VI(Por)O-2] has been examined. Procedures for catalytic epoxidation of alkenes using ruthenium porphyrin catalysts has also been developed. [Ru-VI(Por)(NTs)(2)] was found to undergo aziridination of alkenes and amidation of alkanes in organic solvents at room temperature.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 25/09/20 alle ore 22:12:05