DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization

Detalhes bibliográficos
Autor(a) principal: Santana,Sirlane A. A.
Data de Publicação: 2010
Outros Autores: Carvalho Jr.,Valdemiro P., Lima-Neto,Benedito S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Journal of the Brazilian Chemical Society (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000200013
Resumo: The ring-opening metathesis polymerization (ROMP) of norbornene (NBE) occurs in the presence of the fac-[RuCl2(S-DMSO)3(O-DMSO)] complex and ethyldiazoacetate (5 μL), where DMSO is S- or O-bonded dimethylsulfoxide. The yield is 62% (PDI = 1.64) at room temperature for 5 min and 88% (PDI = 1.93) at 50 ºC for 30 min, with [NBE]/[Ru] = 516 in CHCl3. The yield is 90% (PDI = 1.64) in the presence of NBu4ClO4 at room temperature for 5 min. The complex is practically inactive when one or two molecules of DMSO are replaced by pyridine, imidazole, 2-methyl-imidazole or benzimidazole. The in situ formation of the catalytic species and the behavior of the DMSO molecules as ancillary ligands in the reactivity of the RuII complexes are discussed.
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spelling DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerizationolefin metathesisROMPancillary ligandrutheniumDMSOThe ring-opening metathesis polymerization (ROMP) of norbornene (NBE) occurs in the presence of the fac-[RuCl2(S-DMSO)3(O-DMSO)] complex and ethyldiazoacetate (5 μL), where DMSO is S- or O-bonded dimethylsulfoxide. The yield is 62% (PDI = 1.64) at room temperature for 5 min and 88% (PDI = 1.93) at 50 ºC for 30 min, with [NBE]/[Ru] = 516 in CHCl3. The yield is 90% (PDI = 1.64) in the presence of NBu4ClO4 at room temperature for 5 min. The complex is practically inactive when one or two molecules of DMSO are replaced by pyridine, imidazole, 2-methyl-imidazole or benzimidazole. The in situ formation of the catalytic species and the behavior of the DMSO molecules as ancillary ligands in the reactivity of the RuII complexes are discussed.Sociedade Brasileira de Química2010-01-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000200013Journal of the Brazilian Chemical Society v.21 n.2 2010reponame:Journal of the Brazilian Chemical Society (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.1590/S0103-50532010000200013info:eu-repo/semantics/openAccessSantana,Sirlane A. A.Carvalho Jr.,Valdemiro P.Lima-Neto,Benedito S.eng2010-03-16T00:00:00Zoai:scielo:S0103-50532010000200013Revistahttp://jbcs.sbq.org.brONGhttps://old.scielo.br/oai/scielo-oai.php||office@jbcs.sbq.org.br1678-47900103-5053opendoar:2010-03-16T00:00Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
title DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
spellingShingle DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
Santana,Sirlane A. A.
olefin metathesis
ROMP
ancillary ligand
ruthenium
DMSO
title_short DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
title_full DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
title_fullStr DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
title_full_unstemmed DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
title_sort DMSO molecule as ancillary ligand in Ru-based catalysts for ring opening metathesis polymerization
author Santana,Sirlane A. A.
author_facet Santana,Sirlane A. A.
Carvalho Jr.,Valdemiro P.
Lima-Neto,Benedito S.
author_role author
author2 Carvalho Jr.,Valdemiro P.
Lima-Neto,Benedito S.
author2_role author
author
dc.contributor.author.fl_str_mv Santana,Sirlane A. A.
Carvalho Jr.,Valdemiro P.
Lima-Neto,Benedito S.
dc.subject.por.fl_str_mv olefin metathesis
ROMP
ancillary ligand
ruthenium
DMSO
topic olefin metathesis
ROMP
ancillary ligand
ruthenium
DMSO
description The ring-opening metathesis polymerization (ROMP) of norbornene (NBE) occurs in the presence of the fac-[RuCl2(S-DMSO)3(O-DMSO)] complex and ethyldiazoacetate (5 μL), where DMSO is S- or O-bonded dimethylsulfoxide. The yield is 62% (PDI = 1.64) at room temperature for 5 min and 88% (PDI = 1.93) at 50 ºC for 30 min, with [NBE]/[Ru] = 516 in CHCl3. The yield is 90% (PDI = 1.64) in the presence of NBu4ClO4 at room temperature for 5 min. The complex is practically inactive when one or two molecules of DMSO are replaced by pyridine, imidazole, 2-methyl-imidazole or benzimidazole. The in situ formation of the catalytic species and the behavior of the DMSO molecules as ancillary ligands in the reactivity of the RuII complexes are discussed.
publishDate 2010
dc.date.none.fl_str_mv 2010-01-01
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000200013
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0103-50532010000200013
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv 10.1590/S0103-50532010000200013
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv text/html
dc.publisher.none.fl_str_mv Sociedade Brasileira de Química
publisher.none.fl_str_mv Sociedade Brasileira de Química
dc.source.none.fl_str_mv Journal of the Brazilian Chemical Society v.21 n.2 2010
reponame:Journal of the Brazilian Chemical Society (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Journal of the Brazilian Chemical Society (Online)
collection Journal of the Brazilian Chemical Society (Online)
repository.name.fl_str_mv Journal of the Brazilian Chemical Society (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv ||office@jbcs.sbq.org.br
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