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Titolo:
MN-SALEN CATALYZED ASYMMETRIC OXIDATION OF SIMPLE OLEFINS AND SULFIDES
Autore:
KATSUKI T;
Indirizzi:
KYUSHU UNIV 33,FAC SCI,DEPT CHEM,HIGASHI KU,HAKOZAKI FUKUOKA 81281 JAPAN
Titolo Testata:
Yuki Gosei Kagaku Kyokaishi
fascicolo: 11, volume: 53, anno: 1995,
pagine: 940 - 951
SICI:
0037-9980(1995)53:11<940:MCAOOS>2.0.ZU;2-7
Fonte:
ISI
Lingua:
ENG
Soggetto:
CHIRAL (SALEN)MANGANESE(III) COMPLEXES; TWIN-CORONET PORPHYRINS; ENANTIOSELECTIVE EPOXIDATION; UNFUNCTIONALIZED OLEFINS; ORGANIC HYDROPEROXIDES; STYRENE DERIVATIVES; IRON PORPHYRINS; OXYGEN-TRANSFER; IODOSYLBENZENE; HYDROXYLATION;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Science Citation Index Expanded
Citazioni:
55
Recensione:
Indirizzi per estratti:
Citazione:
T. Katsuki, "MN-SALEN CATALYZED ASYMMETRIC OXIDATION OF SIMPLE OLEFINS AND SULFIDES", Yuki Gosei Kagaku Kyokaishi, 53(11), 1995, pp. 940-951

Abstract

Among the several Mn-salen type catalysts studied, a rationally designed Mn-salen catalyst (14) was found to be the most effective for asymmetric epoxidation of simple olefins, especially cis-disubstituted andtrisubstituted olefins conjugated with aryl, alkenyl and alkynyl groups. The mechanism of asymmetrc-inducition of this reaction has been well rationalized by the proposal that olefins approach oxo-metal from the side-on to give a metallaoxetane intermediate, wherein steric and electronic repulsions between the salen ligand and the olefinic substituent dictate the orientation of the incoming olefins and, the intermediate is transformed into epoxides via a radical intermediate. Asymmetric oxidation of sulfides was also found to be effectively catalyzed byMn-salen catalyst (21). c

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 24/09/20 alle ore 06:02:13