Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone
Autor(a) principal: | |
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Data de Publicação: | 2013 |
Tipo de documento: | Tese |
Idioma: | eng |
Título da fonte: | Biblioteca Digital de Teses e Dissertações da UFRGS |
Texto Completo: | http://hdl.handle.net/10183/81562 |
Resumo: | A series of new Al(III) complexes bearing silyl ortho-substituted 2,6- bis(naphtholate)-pyridine tridentate ligands ({ONOSiR3}2-, SiR3 = SiPh3, SiMe2tBu) and two monomeric Y(III) complexes bearing a new cumyl ortho-substituted 2,6- bis(phenolate)-pyridine tridentate ligand {ONOMe,Cumyl}2- have been prepared and structurally characterized in solution and in the solid-state. Preliminary studies on the catalytic performances of the compounds in the ROP of racemic lactide and β- butyrolactone are described. Also, details of the reactions of chiral Al-lactate and -{β- alkoxy ester} complexes which are close models/mimics of the first intermediates and active species involved in the initiation and propagation steps of the ROP of lactides and β-lactones with stoichiometric amounts of lactide. |
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Klitzke, Joice SandraCasagrande Júnior, Osvaldo de Lázaro2013-11-27T01:47:18Z2013http://hdl.handle.net/10183/81562000904565A series of new Al(III) complexes bearing silyl ortho-substituted 2,6- bis(naphtholate)-pyridine tridentate ligands ({ONOSiR3}2-, SiR3 = SiPh3, SiMe2tBu) and two monomeric Y(III) complexes bearing a new cumyl ortho-substituted 2,6- bis(phenolate)-pyridine tridentate ligand {ONOMe,Cumyl}2- have been prepared and structurally characterized in solution and in the solid-state. Preliminary studies on the catalytic performances of the compounds in the ROP of racemic lactide and β- butyrolactone are described. Also, details of the reactions of chiral Al-lactate and -{β- alkoxy ester} complexes which are close models/mimics of the first intermediates and active species involved in the initiation and propagation steps of the ROP of lactides and β-lactones with stoichiometric amounts of lactide.application/pdfengPolimerização por abertura de anelComplexos metálicosCatalisadoresYttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactoneinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/doctoralThesisUniversidade Federal do Rio Grande do SulInstituto de QuímicaPrograma de Pós-Graduação em QuímicaPorto Alegre, BR-RS2013doutoradoinfo:eu-repo/semantics/openAccessreponame:Biblioteca Digital de Teses e Dissertações da UFRGSinstname:Universidade Federal do Rio Grande do Sul (UFRGS)instacron:UFRGSORIGINAL000904565.pdf000904565.pdfTexto completo (inglês)application/pdf6496770http://www.lume.ufrgs.br/bitstream/10183/81562/1/000904565.pdf2cf7363a9fd69192fb287e58be038322MD51TEXT000904565.pdf.txt000904565.pdf.txtExtracted Texttext/plain254747http://www.lume.ufrgs.br/bitstream/10183/81562/2/000904565.pdf.txtf795b807a69d135fb68fce3e81eb2e0cMD52THUMBNAIL000904565.pdf.jpg000904565.pdf.jpgGenerated Thumbnailimage/jpeg1456http://www.lume.ufrgs.br/bitstream/10183/81562/3/000904565.pdf.jpgf33f5a74d3e95995fd0a007a7131fc63MD5310183/815622021-05-07 05:11:39.802592oai:www.lume.ufrgs.br:10183/81562Biblioteca Digital de Teses e Dissertaçõeshttps://lume.ufrgs.br/handle/10183/2PUBhttps://lume.ufrgs.br/oai/requestlume@ufrgs.br||lume@ufrgs.bropendoar:18532021-05-07T08:11:39Biblioteca Digital de Teses e Dissertações da UFRGS - Universidade Federal do Rio Grande do Sul (UFRGS)false |
dc.title.pt_BR.fl_str_mv |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
title |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
spellingShingle |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone Klitzke, Joice Sandra Polimerização por abertura de anel Complexos metálicos Catalisadores |
title_short |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
title_full |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
title_fullStr |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
title_full_unstemmed |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
title_sort |
Yttrium and aluminum catalysts and model complexes for ring-opening polymerization of lactide and beta-butyrolactone |
author |
Klitzke, Joice Sandra |
author_facet |
Klitzke, Joice Sandra |
author_role |
author |
dc.contributor.author.fl_str_mv |
Klitzke, Joice Sandra |
dc.contributor.advisor1.fl_str_mv |
Casagrande Júnior, Osvaldo de Lázaro |
contributor_str_mv |
Casagrande Júnior, Osvaldo de Lázaro |
dc.subject.por.fl_str_mv |
Polimerização por abertura de anel Complexos metálicos Catalisadores |
topic |
Polimerização por abertura de anel Complexos metálicos Catalisadores |
description |
A series of new Al(III) complexes bearing silyl ortho-substituted 2,6- bis(naphtholate)-pyridine tridentate ligands ({ONOSiR3}2-, SiR3 = SiPh3, SiMe2tBu) and two monomeric Y(III) complexes bearing a new cumyl ortho-substituted 2,6- bis(phenolate)-pyridine tridentate ligand {ONOMe,Cumyl}2- have been prepared and structurally characterized in solution and in the solid-state. Preliminary studies on the catalytic performances of the compounds in the ROP of racemic lactide and β- butyrolactone are described. Also, details of the reactions of chiral Al-lactate and -{β- alkoxy ester} complexes which are close models/mimics of the first intermediates and active species involved in the initiation and propagation steps of the ROP of lactides and β-lactones with stoichiometric amounts of lactide. |
publishDate |
2013 |
dc.date.accessioned.fl_str_mv |
2013-11-27T01:47:18Z |
dc.date.issued.fl_str_mv |
2013 |
dc.type.status.fl_str_mv |
info:eu-repo/semantics/publishedVersion |
dc.type.driver.fl_str_mv |
info:eu-repo/semantics/doctoralThesis |
format |
doctoralThesis |
status_str |
publishedVersion |
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http://hdl.handle.net/10183/81562 |
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000904565 |
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000904565 |
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eng |
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eng |
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openAccess |
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