Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre

Detalhes bibliográficos
Autor(a) principal: Messina,Leonardo C.
Data de Publicação: 2021
Outros Autores: Omori,Álvaro T.
Tipo de documento: Artigo
Idioma: por
Título da fonte: Química Nova (Online)
Texto Completo: http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300372
Resumo: An adaptation on the classical synthesis methodology for 1,3-diaryltriazenes for a 4-hour experimental class has been proposed with green chemistry principles in mind by using commercial vinegar as a source for diazotization with NaNO2 and keeping the reaction workup to simple vacuum filtration. Several anilines with different substituent groups were used to evaluate how they affect the synthesis based on their electron-donating/withdrawing characteristics. The decomposition of the triazenes in acidic media was also monitored via TLC. On the overall, the reactions came up with medium to high yield and high purity. Experimental procedure, reaction mechanism and other potential discussions such as green chemistry principles and effects of electron-donating/withdrawing groups are suitable for undergraduate students.
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spelling Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagreorganic chemistrygreen chemistryanilinestriazenesvinegarAn adaptation on the classical synthesis methodology for 1,3-diaryltriazenes for a 4-hour experimental class has been proposed with green chemistry principles in mind by using commercial vinegar as a source for diazotization with NaNO2 and keeping the reaction workup to simple vacuum filtration. Several anilines with different substituent groups were used to evaluate how they affect the synthesis based on their electron-donating/withdrawing characteristics. The decomposition of the triazenes in acidic media was also monitored via TLC. On the overall, the reactions came up with medium to high yield and high purity. Experimental procedure, reaction mechanism and other potential discussions such as green chemistry principles and effects of electron-donating/withdrawing groups are suitable for undergraduate students.Sociedade Brasileira de Química2021-03-01info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersiontext/htmlhttp://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300372Química Nova v.44 n.3 2021reponame:Química Nova (Online)instname:Sociedade Brasileira de Química (SBQ)instacron:SBQ10.21577/0100-4042.20170655info:eu-repo/semantics/openAccessMessina,Leonardo C.Omori,Álvaro T.por2021-05-21T00:00:00Zoai:scielo:S0100-40422021000300372Revistahttps://www.scielo.br/j/qn/ONGhttps://old.scielo.br/oai/scielo-oai.phpquimicanova@sbq.org.br1678-70640100-4042opendoar:2021-05-21T00:00Química Nova (Online) - Sociedade Brasileira de Química (SBQ)false
dc.title.none.fl_str_mv Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
title Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
spellingShingle Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
Messina,Leonardo C.
organic chemistry
green chemistry
anilines
triazenes
vinegar
title_short Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
title_full Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
title_fullStr Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
title_full_unstemmed Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
title_sort Síntese verde de 1,3-diariltriazenos simétricos e assimétricos em vinagre
author Messina,Leonardo C.
author_facet Messina,Leonardo C.
Omori,Álvaro T.
author_role author
author2 Omori,Álvaro T.
author2_role author
dc.contributor.author.fl_str_mv Messina,Leonardo C.
Omori,Álvaro T.
dc.subject.por.fl_str_mv organic chemistry
green chemistry
anilines
triazenes
vinegar
topic organic chemistry
green chemistry
anilines
triazenes
vinegar
description An adaptation on the classical synthesis methodology for 1,3-diaryltriazenes for a 4-hour experimental class has been proposed with green chemistry principles in mind by using commercial vinegar as a source for diazotization with NaNO2 and keeping the reaction workup to simple vacuum filtration. Several anilines with different substituent groups were used to evaluate how they affect the synthesis based on their electron-donating/withdrawing characteristics. The decomposition of the triazenes in acidic media was also monitored via TLC. On the overall, the reactions came up with medium to high yield and high purity. Experimental procedure, reaction mechanism and other potential discussions such as green chemistry principles and effects of electron-donating/withdrawing groups are suitable for undergraduate students.
publishDate 2021
dc.date.none.fl_str_mv 2021-03-01
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=S0100-40422021000300372
url http://old.scielo.br/scielo.php?script=sci_arttext&pid=S0100-40422021000300372
dc.language.iso.fl_str_mv por
language por
dc.relation.none.fl_str_mv 10.21577/0100-4042.20170655
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 Química Nova v.44 n.3 2021
reponame:Química Nova (Online)
instname:Sociedade Brasileira de Química (SBQ)
instacron:SBQ
instname_str Sociedade Brasileira de Química (SBQ)
instacron_str SBQ
institution SBQ
reponame_str Química Nova (Online)
collection Química Nova (Online)
repository.name.fl_str_mv Química Nova (Online) - Sociedade Brasileira de Química (SBQ)
repository.mail.fl_str_mv quimicanova@sbq.org.br
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