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  Patent History
  • Application
    US 11/080436 2005-03-16
  • Publication
    US 2005209470 2005-09-22
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published patent: Diastereoselective epoxidation of allylically substituted alkenes using metalloporphyrin catalysts

TitleDiastereoselective epoxidation of allylically substituted alkenes using metalloporphyrin catalysts
Priority Date2005-03-16 US 11/080436
2004-03-18 US 10/553972P
Inventors
Issue Date2005
Citation
US Published patent application US 2005209470. Washington, DC: US Patent and Trademark Office (USPTO), 2005 How to Cite?
AbstractDiastereoselective epoxidation of allylically substituted alkenes using metalloporphyrins as catalyst provides high trans-selectivities (i.e., trans-:cis-epoxide ratio). A diversity of cycloalkenes bearing different allylic substituents are shown to be efficiently epoxidized to afford the corresponding trans-epoxides with excellent trans-selectivities (up to >98%) and good yields (up to 99%). Acyclic allylic alkenes bearing different allylic substituents are efficiently epoxidized to afford the corresponding erythro-epoxides with good erythro-selectivities. The metalloporphyrin-catalyzed reactions exhibit up to 20 times higher trans-selectivities than the conventional method using m-chloroperoxybenzoic acid as oxidant.
Persistent Identifierhttp://hdl.handle.net/10722/176903

 

DC FieldValueLanguage
dc.date.accessioned2012-11-30T08:38:43Z-
dc.date.available2012-11-30T08:38:43Z-
dc.date.issued2005-
dc.identifier.citationUS Published patent application US 2005209470. Washington, DC: US Patent and Trademark Office (USPTO), 2005en_HK
dc.identifier.urihttp://hdl.handle.net/10722/176903-
dc.description.abstractDiastereoselective epoxidation of allylically substituted alkenes using metalloporphyrins as catalyst provides high trans-selectivities (i.e., trans-:cis-epoxide ratio). A diversity of cycloalkenes bearing different allylic substituents are shown to be efficiently epoxidized to afford the corresponding trans-epoxides with excellent trans-selectivities (up to >98%) and good yields (up to 99%). Acyclic allylic alkenes bearing different allylic substituents are efficiently epoxidized to afford the corresponding erythro-epoxides with good erythro-selectivities. The metalloporphyrin-catalyzed reactions exhibit up to 20 times higher trans-selectivities than the conventional method using m-chloroperoxybenzoic acid as oxidant.en_HK
dc.rightsCreative Commons: Attribution 3.0 Hong Kong License For Public Patent Documentsen_US
dc.titleDiastereoselective epoxidation of allylically substituted alkenes using metalloporphyrin catalystsen_HK
dc.typePatenten_US
dc.description.naturepublished_or_final_versionen_US
dc.contributor.inventorChe, CMen_HK
dc.contributor.inventorWong Man-Kinen_HK
patents.identifier.applicationUS 11/080436en_HK
patents.description.assigneeTHE UNIVERSITY OF HONG KONGen_HK
patents.description.countryUnited States of Americaen_HK
patents.date.publication2005-09-22en_HK
patents.date.application2005-03-16en_HK
patents.date.priority2005-03-16 US 11/080436en_HK
patents.date.priority2004-03-18 US 10/553972Pen_HK
patents.description.ccUSen_HK
patents.identifier.publicationUS 2005209470en_HK
patents.relation.familyCN 1934115 (A) 2007-03-21en_HK
patents.relation.familyUS 2005209470 (A1) 2005-09-22en_HK
patents.relation.familyUS 7482478 (B2) 2009-01-27en_HK
patents.relation.familyWO 2005087776 (A1) 2005-09-22en_HK
patents.description.kindA1en_HK
patents.typePatent_publisheden_HK

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