Enantioselective alkylation of β-keto esters promoted by dimeric Cinchona-derived ammonium salts as recoverable organocatalysts
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Campo DC | Valor | Idioma |
---|---|---|
dc.contributor | Síntesis Asimétrica (SINTAS) | es |
dc.contributor | Catálisis Estereoselectiva en Síntesis Orgánica (CESO) | es |
dc.contributor.author | Tarí Segarra, Silvia | - |
dc.contributor.author | Chinchilla, Rafael | - |
dc.contributor.author | Nájera, Carmen | - |
dc.contributor.author | Yus, Miguel | - |
dc.contributor.other | Universidad de Alicante. Departamento de Química Orgánica | es |
dc.date.accessioned | 2013-12-04T09:15:41Z | - |
dc.date.available | 2013-12-04T09:15:41Z | - |
dc.date.issued | 2011-02-04 | - |
dc.identifier.citation | ARKIVOC. 2011, 2011(7): 116-127 | es |
dc.identifier.issn | 1551-7004 (Print) | - |
dc.identifier.issn | 1551-7012 (Online) | - |
dc.identifier.uri | http://hdl.handle.net/10045/34356 | - |
dc.description.abstract | Dimeric anthracenyldimethyl-derived Cinchona ammonium salts are used as chiral organocatalysts in 5 mol% for the phase-transfer enantioselective alkylation reaction of 2-alkoxycarbonyl-1-indanones with activated bromides. The corresponding adducts bearing a new all-carbon quaternary center are obtained usually in high yield and with moderate and opposite enantioselectivity (up to 55%) when using ammonium salts derived from quinidine and its pseudoenantiomer quinine as organocatalysts. These catalysts can be almost quantitatively recovered by precipitation in ether and reused. | es |
dc.description.sponsorship | Financial support from the Spanish Ministerio de Ciencia e Innovación (projects CTQ2007-62771/BQU and Consolider Ingenio 2010, CSD2007-00006), the Generalitat Valenciana (Prometeo/2009/039), FEDER and the University of Alicante. | es |
dc.language | eng | es |
dc.publisher | Arkat USA, Inc. | es |
dc.rights | © ARKAT-USA, Inc. | es |
dc.subject | Asymmetric synthesis | es |
dc.subject | Ammonium salts | es |
dc.subject | Phase-transfer catalysis | es |
dc.subject | Alkylation | es |
dc.subject | β-keto esters | es |
dc.subject.other | Química Orgánica | es |
dc.title | Enantioselective alkylation of β-keto esters promoted by dimeric Cinchona-derived ammonium salts as recoverable organocatalysts | es |
dc.type | info:eu-repo/semantics/article | es |
dc.peerreviewed | si | es |
dc.relation.publisherversion | http://www.arkat-usa.org/arkivoc-journal/browse-arkivoc/2011/7/ | es |
dc.rights.accessRights | info:eu-repo/semantics/openAccess | es |
Aparece en las colecciones: | INV - CESO - Artículos de Revistas INV - SINTAS - Artículos de Revistas |
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2011_Tari_etal_Arkivoc.pdf | 249,99 kB | Adobe PDF | Abrir Vista previa | |
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