New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications

Detalhes bibliográficos
Autor(a) principal: Teixeira, Fatima
Data de Publicação: 2013
Outros Autores: Rangel, C. M., Teixeira, António P. S.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/10400.9/1988
Resumo: New azaheterocyclic aromatic diphosphonate derivatives of benzimidazole and benzotriazole were synthesized by nickel-catalyzed Arbuzov reaction of 4,7-dibromo-2,1,3-benzothiadiazole with triethyl phosphite, followed by reductive sulfur extrusion reaction and cyclization. This new strategy allowed us to obtain these compounds with high efficiency, with the generation of these azaheterocyclic aromatic diphosphonate derivatives in good to excellent yields, since these compounds could not be synthesized by direct cross-coupling reactions catalyzed by palladium or nickel. All compounds were characterized by NMR, IR spectroscopy and mass spectrometry (low and high resolution). NMR studies of compound 9 showed the presence of only one tautomeric form, on the NMR time scale, in different solvents and at different concentrations.
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spelling New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applicationsDiphosphonatesHybrid materialsFuel cell applicationsNew azaheterocyclic aromatic diphosphonate derivatives of benzimidazole and benzotriazole were synthesized by nickel-catalyzed Arbuzov reaction of 4,7-dibromo-2,1,3-benzothiadiazole with triethyl phosphite, followed by reductive sulfur extrusion reaction and cyclization. This new strategy allowed us to obtain these compounds with high efficiency, with the generation of these azaheterocyclic aromatic diphosphonate derivatives in good to excellent yields, since these compounds could not be synthesized by direct cross-coupling reactions catalyzed by palladium or nickel. All compounds were characterized by NMR, IR spectroscopy and mass spectrometry (low and high resolution). NMR studies of compound 9 showed the presence of only one tautomeric form, on the NMR time scale, in different solvents and at different concentrations.RSCPublishingRepositório do LNEGTeixeira, FatimaRangel, C. M.Teixeira, António P. S.2013-09-18T11:57:56Z2013-01-01T00:00:00Z2013-01-01T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/10400.9/1988engTeixeira, Fátima C.; Rangel, C.M.; Teixeira, António P.S. New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications. In: New Journal of Chemistry, 2013, Vol. 37, nº 10, p. 3084-30911144-0546info:eu-repo/semantics/openAccessreponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãoinstacron:RCAAP2022-09-06T12:26:43Zoai:repositorio.lneg.pt:10400.9/1988Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T15:34:50.713169Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informaçãofalse
dc.title.none.fl_str_mv New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
title New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
spellingShingle New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
Teixeira, Fatima
Diphosphonates
Hybrid materials
Fuel cell applications
title_short New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
title_full New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
title_fullStr New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
title_full_unstemmed New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
title_sort New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications
author Teixeira, Fatima
author_facet Teixeira, Fatima
Rangel, C. M.
Teixeira, António P. S.
author_role author
author2 Rangel, C. M.
Teixeira, António P. S.
author2_role author
author
dc.contributor.none.fl_str_mv Repositório do LNEG
dc.contributor.author.fl_str_mv Teixeira, Fatima
Rangel, C. M.
Teixeira, António P. S.
dc.subject.por.fl_str_mv Diphosphonates
Hybrid materials
Fuel cell applications
topic Diphosphonates
Hybrid materials
Fuel cell applications
description New azaheterocyclic aromatic diphosphonate derivatives of benzimidazole and benzotriazole were synthesized by nickel-catalyzed Arbuzov reaction of 4,7-dibromo-2,1,3-benzothiadiazole with triethyl phosphite, followed by reductive sulfur extrusion reaction and cyclization. This new strategy allowed us to obtain these compounds with high efficiency, with the generation of these azaheterocyclic aromatic diphosphonate derivatives in good to excellent yields, since these compounds could not be synthesized by direct cross-coupling reactions catalyzed by palladium or nickel. All compounds were characterized by NMR, IR spectroscopy and mass spectrometry (low and high resolution). NMR studies of compound 9 showed the presence of only one tautomeric form, on the NMR time scale, in different solvents and at different concentrations.
publishDate 2013
dc.date.none.fl_str_mv 2013-09-18T11:57:56Z
2013-01-01T00:00:00Z
2013-01-01T00:00:00Z
dc.type.status.fl_str_mv info:eu-repo/semantics/publishedVersion
dc.type.driver.fl_str_mv info:eu-repo/semantics/article
format article
status_str publishedVersion
dc.identifier.uri.fl_str_mv http://hdl.handle.net/10400.9/1988
url http://hdl.handle.net/10400.9/1988
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv Teixeira, Fátima C.; Rangel, C.M.; Teixeira, António P.S. New azaheterocyclic aromatic diphosphonates for hybrid materials for fuel cell applications. In: New Journal of Chemistry, 2013, Vol. 37, nº 10, p. 3084-3091
1144-0546
dc.rights.driver.fl_str_mv info:eu-repo/semantics/openAccess
eu_rights_str_mv openAccess
dc.format.none.fl_str_mv application/pdf
dc.publisher.none.fl_str_mv RSCPublishing
publisher.none.fl_str_mv RSCPublishing
dc.source.none.fl_str_mv reponame:Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
instname:Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron:RCAAP
instname_str Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
instacron_str RCAAP
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reponame_str Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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repository.name.fl_str_mv Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos) - Agência para a Sociedade do Conhecimento (UMIC) - FCT - Sociedade da Informação
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