NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives

Autores
Lazaro Martinez, Juan Manuel; Romasanta, Pablo Nicolas; Chattah, Ana Karina; Buldain, Graciela Yolanda
Año de publicación
2010
Idioma
inglés
Tipo de recurso
artículo
Estado
versión publicada
Descripción
The existence and stability of the aldehyde-hydrate form of imidazole-2-carboxaldehyde (4) were studied using FTIR together with solution- and solid-state NMR experiments. The results allowed us to conclude that the hydrate form was stable and precipitated at pH = 8.0 and that the aldehyde form was isolated at pH = 6.5 and 9.5. Moreover, the presence of the aldehyde-hydrate form was studied through NMR experiments in D2O at both alkaline and acidic pH. In addition, the tautomeric forms of the 2-substituted imidazole compounds were also analyzed to investigate the influence of the hybridization on the carbon adjacent to the imidazole ring, by 13C NMR in DMSO-d6, acetone-d6, and CDCl3. The presence of the syn- and anti-isomers of oxime 8 obtained from 4 were characterized by solid-state NMR and variable-temperature NMR experiments in acetone-d 6.
Fil: Lazaro Martinez, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Romasanta, Pablo Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentina
Fil: Chattah, Ana Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Buldain, Graciela Yolanda. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
Materia
Imidazole-2-carboxaldehyde
Hydrate
NMR
Aldehyde forms
Nivel de accesibilidad
acceso abierto
Condiciones de uso
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
Repositorio
CONICET Digital (CONICET)
Institución
Consejo Nacional de Investigaciones Científicas y Técnicas
OAI Identificador
oai:ri.conicet.gov.ar:11336/112934
Acceder
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network_acronym_str CONICETDig
repository_id_str 3498
network_name_str CONICET Digital (CONICET)
spelling NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivativesLazaro Martinez, Juan ManuelRomasanta, Pablo NicolasChattah, Ana KarinaBuldain, Graciela YolandaImidazole-2-carboxaldehydeHydrateNMRAldehyde formshttps://purl.org/becyt/ford/1.4https://purl.org/becyt/ford/1The existence and stability of the aldehyde-hydrate form of imidazole-2-carboxaldehyde (4) were studied using FTIR together with solution- and solid-state NMR experiments. The results allowed us to conclude that the hydrate form was stable and precipitated at pH = 8.0 and that the aldehyde form was isolated at pH = 6.5 and 9.5. Moreover, the presence of the aldehyde-hydrate form was studied through NMR experiments in D2O at both alkaline and acidic pH. In addition, the tautomeric forms of the 2-substituted imidazole compounds were also analyzed to investigate the influence of the hybridization on the carbon adjacent to the imidazole ring, by 13C NMR in DMSO-d6, acetone-d6, and CDCl3. The presence of the syn- and anti-isomers of oxime 8 obtained from 4 were characterized by solid-state NMR and variable-temperature NMR experiments in acetone-d 6.Fil: Lazaro Martinez, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; ArgentinaFil: Romasanta, Pablo Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; ArgentinaFil: Chattah, Ana Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; ArgentinaFil: Buldain, Graciela Yolanda. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; ArgentinaAmerican Chemical Society2010-05info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionhttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdfapplication/pdfapplication/pdfapplication/pdfapplication/pdfhttp://hdl.handle.net/11336/112934Lazaro Martinez, Juan Manuel; Romasanta, Pablo Nicolas; Chattah, Ana Karina; Buldain, Graciela Yolanda; NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives; American Chemical Society; Journal of Organic Chemistry; 75; 10; 5-2010; 3208-32130022-32631520-6904CONICET DigitalCONICETenginfo:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jo902588sinfo:eu-repo/semantics/altIdentifier/doi/10.1021/jo902588sinfo:eu-repo/semantics/openAccesshttps://creativecommons.org/licenses/by-nc-sa/2.5/ar/reponame:CONICET Digital (CONICET)instname:Consejo Nacional de Investigaciones Científicas y Técnicas2025-10-22T11:02:04Zoai:ri.conicet.gov.ar:11336/112934instacron:CONICETInstitucionalhttp://ri.conicet.gov.ar/Organismo científico-tecnológicoNo correspondehttp://ri.conicet.gov.ar/oai/requestdasensio@conicet.gov.ar; lcarlino@conicet.gov.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:34982025-10-22 11:02:04.28CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicasfalse
dc.title.none.fl_str_mv NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
title NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
spellingShingle NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
Lazaro Martinez, Juan Manuel
Imidazole-2-carboxaldehyde
Hydrate
NMR
Aldehyde forms
title_short NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
title_full NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
title_fullStr NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
title_full_unstemmed NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
title_sort NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives
dc.creator.none.fl_str_mv Lazaro Martinez, Juan Manuel
Romasanta, Pablo Nicolas
Chattah, Ana Karina
Buldain, Graciela Yolanda
author Lazaro Martinez, Juan Manuel
author_facet Lazaro Martinez, Juan Manuel
Romasanta, Pablo Nicolas
Chattah, Ana Karina
Buldain, Graciela Yolanda
author_role author
author2 Romasanta, Pablo Nicolas
Chattah, Ana Karina
Buldain, Graciela Yolanda
author2_role author
author
author
dc.subject.none.fl_str_mv Imidazole-2-carboxaldehyde
Hydrate
NMR
Aldehyde forms
topic Imidazole-2-carboxaldehyde
Hydrate
NMR
Aldehyde forms
purl_subject.fl_str_mv https://purl.org/becyt/ford/1.4
https://purl.org/becyt/ford/1
dc.description.none.fl_txt_mv The existence and stability of the aldehyde-hydrate form of imidazole-2-carboxaldehyde (4) were studied using FTIR together with solution- and solid-state NMR experiments. The results allowed us to conclude that the hydrate form was stable and precipitated at pH = 8.0 and that the aldehyde form was isolated at pH = 6.5 and 9.5. Moreover, the presence of the aldehyde-hydrate form was studied through NMR experiments in D2O at both alkaline and acidic pH. In addition, the tautomeric forms of the 2-substituted imidazole compounds were also analyzed to investigate the influence of the hybridization on the carbon adjacent to the imidazole ring, by 13C NMR in DMSO-d6, acetone-d6, and CDCl3. The presence of the syn- and anti-isomers of oxime 8 obtained from 4 were characterized by solid-state NMR and variable-temperature NMR experiments in acetone-d 6.
Fil: Lazaro Martinez, Juan Manuel. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Química y Metabolismo del Fármaco. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Química y Metabolismo del Fármaco; Argentina
Fil: Romasanta, Pablo Nicolas. Consejo Nacional de Investigaciones Científicas y Técnicas. Oficina de Coordinación Administrativa Houssay. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Instituto de Estudios de la Inmunidad Humoral Prof. Ricardo A. Margni; Argentina
Fil: Chattah, Ana Karina. Consejo Nacional de Investigaciones Científicas y Técnicas. Centro Científico Tecnológico Conicet - Córdoba. Instituto de Física Enrique Gaviola. Universidad Nacional de Córdoba. Instituto de Física Enrique Gaviola; Argentina
Fil: Buldain, Graciela Yolanda. Universidad de Buenos Aires. Facultad de Farmacia y Bioquímica. Departamento de Química Orgánica; Argentina. Consejo Nacional de Investigaciones Científicas y Técnicas; Argentina
description The existence and stability of the aldehyde-hydrate form of imidazole-2-carboxaldehyde (4) were studied using FTIR together with solution- and solid-state NMR experiments. The results allowed us to conclude that the hydrate form was stable and precipitated at pH = 8.0 and that the aldehyde form was isolated at pH = 6.5 and 9.5. Moreover, the presence of the aldehyde-hydrate form was studied through NMR experiments in D2O at both alkaline and acidic pH. In addition, the tautomeric forms of the 2-substituted imidazole compounds were also analyzed to investigate the influence of the hybridization on the carbon adjacent to the imidazole ring, by 13C NMR in DMSO-d6, acetone-d6, and CDCl3. The presence of the syn- and anti-isomers of oxime 8 obtained from 4 were characterized by solid-state NMR and variable-temperature NMR experiments in acetone-d 6.
publishDate 2010
dc.date.none.fl_str_mv 2010-05
dc.type.none.fl_str_mv info:eu-repo/semantics/article
info:eu-repo/semantics/publishedVersion
http://purl.org/coar/resource_type/c_6501
info:ar-repo/semantics/articulo
format article
status_str publishedVersion
dc.identifier.none.fl_str_mv http://hdl.handle.net/11336/112934
Lazaro Martinez, Juan Manuel; Romasanta, Pablo Nicolas; Chattah, Ana Karina; Buldain, Graciela Yolanda; NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives; American Chemical Society; Journal of Organic Chemistry; 75; 10; 5-2010; 3208-3213
0022-3263
1520-6904
CONICET Digital
CONICET
url http://hdl.handle.net/11336/112934
identifier_str_mv Lazaro Martinez, Juan Manuel; Romasanta, Pablo Nicolas; Chattah, Ana Karina; Buldain, Graciela Yolanda; NMR characterization of hydrate and aldehyde forms of imidazole-2- carboxaldehyde and derivatives; American Chemical Society; Journal of Organic Chemistry; 75; 10; 5-2010; 3208-3213
0022-3263
1520-6904
CONICET Digital
CONICET
dc.language.none.fl_str_mv eng
language eng
dc.relation.none.fl_str_mv info:eu-repo/semantics/altIdentifier/url/https://pubs.acs.org/doi/10.1021/jo902588s
info:eu-repo/semantics/altIdentifier/doi/10.1021/jo902588s
dc.rights.none.fl_str_mv info:eu-repo/semantics/openAccess
https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
eu_rights_str_mv openAccess
rights_invalid_str_mv https://creativecommons.org/licenses/by-nc-sa/2.5/ar/
dc.format.none.fl_str_mv application/pdf
application/pdf
application/pdf
application/pdf
application/pdf
dc.publisher.none.fl_str_mv American Chemical Society
publisher.none.fl_str_mv American Chemical Society
dc.source.none.fl_str_mv reponame:CONICET Digital (CONICET)
instname:Consejo Nacional de Investigaciones Científicas y Técnicas
reponame_str CONICET Digital (CONICET)
collection CONICET Digital (CONICET)
instname_str Consejo Nacional de Investigaciones Científicas y Técnicas
repository.name.fl_str_mv CONICET Digital (CONICET) - Consejo Nacional de Investigaciones Científicas y Técnicas
repository.mail.fl_str_mv dasensio@conicet.gov.ar; lcarlino@conicet.gov.ar
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score 12.982451

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