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Article: Chiral manganese and iron complexes of binaphthyl Schiff bases: Syntheses, crystal structures and asymmetric epoxidation of alkenes

TitleChiral manganese and iron complexes of binaphthyl Schiff bases: Syntheses, crystal structures and asymmetric epoxidation of alkenes
Authors
Issue Date1997
PublisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/dalton
Citation
Journal Of The Chemical Society - Dalton Transactions, 1997 n. 19, p. 3479-3482 How to Cite?
AbstractThe chiral binaphthyl Schiff-base manganese complexes [MnL(X)] [H2L = 2,21-bis(3-R2-5-R 2-2-hydroxybenzylideneimino)-1,1′-binaphthyl; R1 = R2 = Cl, X = O2CMe 1; R1 = Et, R2 = NO2, X = O2CMe 2; R1 = R2 = Cl, X = acac (acetylacetonate) 3] and an iron analogue [FeL(acac)] 4 (R1 = R2 = Cl) have been prepared. The crystal structures of the racemic forms of 3·CH2Cl2 and 4·2H2O exhibit non-planar cis-β configurations with dihedral angles of 85.5 and 72.1° respectively between the two naphthalene rings. Complexes (R)-1 to 3 are active catalysts for the asymmetric epoxidation of alkenes by PhIO. The oxidation of cis-β-methylstyrene by (R)-2 in toluene at -20°C gave an enantiomeric excess of 76%.
Persistent Identifierhttp://hdl.handle.net/10722/69970
ISSN
1999 Impact Factor: 2.31
ISI Accession Number ID
References

 

DC FieldValueLanguage
dc.contributor.authorCheng, MCen_HK
dc.contributor.authorChan, MCWen_HK
dc.contributor.authorPeng, SMen_HK
dc.contributor.authorCheung, KKen_HK
dc.contributor.authorChe, CMen_HK
dc.date.accessioned2010-09-06T06:18:30Z-
dc.date.available2010-09-06T06:18:30Z-
dc.date.issued1997en_HK
dc.identifier.citationJournal Of The Chemical Society - Dalton Transactions, 1997 n. 19, p. 3479-3482en_HK
dc.identifier.issn0300-9246en_HK
dc.identifier.urihttp://hdl.handle.net/10722/69970-
dc.description.abstractThe chiral binaphthyl Schiff-base manganese complexes [MnL(X)] [H2L = 2,21-bis(3-R2-5-R 2-2-hydroxybenzylideneimino)-1,1′-binaphthyl; R1 = R2 = Cl, X = O2CMe 1; R1 = Et, R2 = NO2, X = O2CMe 2; R1 = R2 = Cl, X = acac (acetylacetonate) 3] and an iron analogue [FeL(acac)] 4 (R1 = R2 = Cl) have been prepared. The crystal structures of the racemic forms of 3·CH2Cl2 and 4·2H2O exhibit non-planar cis-β configurations with dihedral angles of 85.5 and 72.1° respectively between the two naphthalene rings. Complexes (R)-1 to 3 are active catalysts for the asymmetric epoxidation of alkenes by PhIO. The oxidation of cis-β-methylstyrene by (R)-2 in toluene at -20°C gave an enantiomeric excess of 76%.en_HK
dc.languageengen_HK
dc.publisherRoyal Society of Chemistry. The Journal's web site is located at http://www.rsc.org/daltonen_HK
dc.relation.ispartofJournal of the Chemical Society - Dalton Transactionsen_HK
dc.titleChiral manganese and iron complexes of binaphthyl Schiff bases: Syntheses, crystal structures and asymmetric epoxidation of alkenesen_HK
dc.typeArticleen_HK
dc.identifier.openurlhttp://library.hku.hk:4550/resserv?sid=HKU:IR&issn=1472-7773&volume=&spage=3479&epage=3482&date=1997&atitle=Chiral+manganese+and+iron+complexes+of+binaphthyl+Schiff+bases:++syntheses,+crystal+structures+and+asymmetric+epoxidation+of+alkenesen_HK
dc.identifier.emailChe, CM:cmche@hku.hken_HK
dc.identifier.authorityChe, CM=rp00670en_HK
dc.description.naturelink_to_subscribed_fulltext-
dc.identifier.doi10.1039/A700712D-
dc.identifier.scopuseid_2-s2.0-33749096387en_HK
dc.identifier.hkuros32008en_HK
dc.relation.referenceshttp://www.scopus.com/mlt/select.url?eid=2-s2.0-33749096387&selection=ref&src=s&origin=recordpageen_HK
dc.identifier.issue19en_HK
dc.identifier.spage3479en_HK
dc.identifier.epage3482en_HK
dc.identifier.isiWOS:A1997YB26400015-
dc.identifier.scopusauthoridCheng, MC=36833891700en_HK
dc.identifier.scopusauthoridChan, MCW=7402598116en_HK
dc.identifier.scopusauthoridPeng, SM=35464852200en_HK
dc.identifier.scopusauthoridCheung, KK=7402406613en_HK
dc.identifier.scopusauthoridChe, CM=7102442791en_HK

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