Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins

Detalhes bibliográficos
Autor(a) principal: Cerqueira, N. M. F. S. A.
Data de Publicação: 2003
Outros Autores: Rodrigues, Lígia M., Campos, Ana M. F. Oliveira, Carvalho, Luís H. Melo de, Coelho, Paulo J., Dubest, Roger, Aubard, Jean, Samat, André, Guglielmetti, Robert J.
Tipo de documento: Artigo
Idioma: eng
Título da fonte: Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
Texto Completo: http://hdl.handle.net/1822/1024
Resumo: New photochromic 2H-chromenes including a 3-carboxylated coumarin nucleus were synthesised from hydroxycoumarins, and, in one case, the corrresponding trimethoxysilylcarboxamide was prepared. The photochromic behaviour was studied under flash photolysis conditions. The introduction of electron-withdrawing substituents in this position of the coumarin nucleus led to a global and significant bathochromic shift in the spectra of the open forms and to an interesting intensification in the colorability.
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spelling Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarinsPhotochromicCarboxylated coumarins2H-chromenesBenzopyransScience & TechnologyNew photochromic 2H-chromenes including a 3-carboxylated coumarin nucleus were synthesised from hydroxycoumarins, and, in one case, the corrresponding trimethoxysilylcarboxamide was prepared. The photochromic behaviour was studied under flash photolysis conditions. The introduction of electron-withdrawing substituents in this position of the coumarin nucleus led to a global and significant bathochromic shift in the spectra of the open forms and to an interesting intensification in the colorability.Fundação para a Ciência e a Tecnologia – PRAXIS XXI - /P/QUI/10021.WileyUniversidade do MinhoCerqueira, N. M. F. S. A.Rodrigues, Lígia M.Campos, Ana M. F. OliveiraCarvalho, Luís H. Melo deCoelho, Paulo J.Dubest, RogerAubard, JeanSamat, AndréGuglielmetti, Robert J.2003-09-222003-09-22T00:00:00Zinfo:eu-repo/semantics/publishedVersioninfo:eu-repo/semantics/articleapplication/pdfhttp://hdl.handle.net/1822/1024engCERQUEIRA, Nuno. M. F. S. A. [et al.] - Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins. “Helvetica chimica acta” [Em linha]. 86:9 (2003) 3244-3253. [Consult. 8 Abr. 2005]. Disponível em: http://www3.interscience.wiley.com/cgi-bin/fulltext/105558796/PDFSTART.0018-019X10.1002/hlca.200390264info: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:RCAAP2023-07-21T12:44:42Zoai:repositorium.sdum.uminho.pt:1822/1024Portal AgregadorONGhttps://www.rcaap.pt/oai/openaireopendoar:71602024-03-19T19:42:26.968721Repositório 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 Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
title Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
spellingShingle Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
Cerqueira, N. M. F. S. A.
Photochromic
Carboxylated coumarins
2H-chromenes
Benzopyrans
Science & Technology
title_short Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
title_full Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
title_fullStr Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
title_full_unstemmed Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
title_sort Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins
author Cerqueira, N. M. F. S. A.
author_facet Cerqueira, N. M. F. S. A.
Rodrigues, Lígia M.
Campos, Ana M. F. Oliveira
Carvalho, Luís H. Melo de
Coelho, Paulo J.
Dubest, Roger
Aubard, Jean
Samat, André
Guglielmetti, Robert J.
author_role author
author2 Rodrigues, Lígia M.
Campos, Ana M. F. Oliveira
Carvalho, Luís H. Melo de
Coelho, Paulo J.
Dubest, Roger
Aubard, Jean
Samat, André
Guglielmetti, Robert J.
author2_role author
author
author
author
author
author
author
author
dc.contributor.none.fl_str_mv Universidade do Minho
dc.contributor.author.fl_str_mv Cerqueira, N. M. F. S. A.
Rodrigues, Lígia M.
Campos, Ana M. F. Oliveira
Carvalho, Luís H. Melo de
Coelho, Paulo J.
Dubest, Roger
Aubard, Jean
Samat, André
Guglielmetti, Robert J.
dc.subject.por.fl_str_mv Photochromic
Carboxylated coumarins
2H-chromenes
Benzopyrans
Science & Technology
topic Photochromic
Carboxylated coumarins
2H-chromenes
Benzopyrans
Science & Technology
description New photochromic 2H-chromenes including a 3-carboxylated coumarin nucleus were synthesised from hydroxycoumarins, and, in one case, the corrresponding trimethoxysilylcarboxamide was prepared. The photochromic behaviour was studied under flash photolysis conditions. The introduction of electron-withdrawing substituents in this position of the coumarin nucleus led to a global and significant bathochromic shift in the spectra of the open forms and to an interesting intensification in the colorability.
publishDate 2003
dc.date.none.fl_str_mv 2003-09-22
2003-09-22T00:00:00Z
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/1822/1024
url http://hdl.handle.net/1822/1024
dc.language.iso.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv CERQUEIRA, Nuno. M. F. S. A. [et al.] - Synthesis and reactivity of photochromic 2H-chromenes based on 3-carboxylated coumarins. “Helvetica chimica acta” [Em linha]. 86:9 (2003) 3244-3253. [Consult. 8 Abr. 2005]. Disponível em: http://www3.interscience.wiley.com/cgi-bin/fulltext/105558796/PDFSTART.
0018-019X
10.1002/hlca.200390264
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 Wiley
publisher.none.fl_str_mv Wiley
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)
collection Repositório Científico de Acesso Aberto de Portugal (Repositórios Cientìficos)
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
repository.mail.fl_str_mv
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