Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst
- Autores
- Bennardi, Daniel Oscar; Romanelli, Gustavo Pablo; Jios, Jorge Luis; Autino, Juan Carlos; Baronetti, Graciela Teresita; Thomas, Horacio Jorge
- Año de publicación
- 2008
- Idioma
- inglés
- Tipo de recurso
- artículo
- Estado
- versión publicada
- Descripción
- In this work, we report the use of bulk and silica-supported Wells-Dawson acid (H2P2W18O62.24H2O) as reusable, heterogeneous catalysts to obtain substituted flavones and chromones for the cyclization of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanediones. The reaction experiments were performed using toluene as solvent at reflux and in the absence of solvent, at 110°C. Under these conditions eleven examples were obtained with very good yields (82-91%) and high selectivity. The catalysts were easily recycled and reused without loss of their catalytic activity. The presented synthetic method is a simple, clean and environmentally friendly alternative for synthesizing substituted flavones and chromones.
Centro de Investigación y Desarrollo en Ciencias Aplicadas
Facultad de Ciencias Agrarias y Forestales
Laboratorio de Servicios a la Industria y al Sistema Científico - Materia
-
Química
Acid catalysis
Chromones
Flavones
H2P2W18O62.24H2O
Silica gel-supported catalyst - Nivel de accesibilidad
- acceso abierto
- Condiciones de uso
- http://creativecommons.org/licenses/by-nc/3.0/
- Repositorio
.jpg)
- Institución
- Universidad Nacional de La Plata
- OAI Identificador
- oai:sedici.unlp.edu.ar:10915/83026
Ver los metadatos del registro completo
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Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalystBennardi, Daniel OscarRomanelli, Gustavo PabloJios, Jorge LuisAutino, Juan CarlosBaronetti, Graciela TeresitaThomas, Horacio JorgeQuímicaAcid catalysisChromonesFlavonesH2P2W18O62.24H2OSilica gel-supported catalystIn this work, we report the use of bulk and silica-supported Wells-Dawson acid (H2P2W18O62.24H2O) as reusable, heterogeneous catalysts to obtain substituted flavones and chromones for the cyclization of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanediones. The reaction experiments were performed using toluene as solvent at reflux and in the absence of solvent, at 110°C. Under these conditions eleven examples were obtained with very good yields (82-91%) and high selectivity. The catalysts were easily recycled and reused without loss of their catalytic activity. The presented synthetic method is a simple, clean and environmentally friendly alternative for synthesizing substituted flavones and chromones.Centro de Investigación y Desarrollo en Ciencias AplicadasFacultad de Ciencias Agrarias y ForestalesLaboratorio de Servicios a la Industria y al Sistema Científico2008info:eu-repo/semantics/articleinfo:eu-repo/semantics/publishedVersionArticulohttp://purl.org/coar/resource_type/c_6501info:ar-repo/semantics/articuloapplication/pdf123-130http://sedici.unlp.edu.ar/handle/10915/83026enginfo:eu-repo/semantics/altIdentifier/issn/1551--701info:eu-repo/semantics/altIdentifier/doi/10.3998/ark.5550190.0009.b12info:eu-repo/semantics/openAccesshttp://creativecommons.org/licenses/by-nc/3.0/Creative Commons Attribution-NonCommercial 3.0 Unported (CC BY-NC 3.0)reponame:SEDICI (UNLP)instname:Universidad Nacional de La Platainstacron:UNLP2025-10-15T11:07:37Zoai:sedici.unlp.edu.ar:10915/83026Institucionalhttp://sedici.unlp.edu.ar/Universidad públicaNo correspondehttp://sedici.unlp.edu.ar/oai/snrdalira@sedici.unlp.edu.arArgentinaNo correspondeNo correspondeNo correspondeopendoar:13292025-10-15 11:07:37.55SEDICI (UNLP) - Universidad Nacional de La Platafalse |
| dc.title.none.fl_str_mv |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| title |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| spellingShingle |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst Bennardi, Daniel Oscar Química Acid catalysis Chromones Flavones H2P2W18O62.24H2O Silica gel-supported catalyst |
| title_short |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| title_full |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| title_fullStr |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| title_full_unstemmed |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| title_sort |
Synthesis of substituted flavones and chromones using a Wells-Dawson heteropolyacid as catalyst |
| dc.creator.none.fl_str_mv |
Bennardi, Daniel Oscar Romanelli, Gustavo Pablo Jios, Jorge Luis Autino, Juan Carlos Baronetti, Graciela Teresita Thomas, Horacio Jorge |
| author |
Bennardi, Daniel Oscar |
| author_facet |
Bennardi, Daniel Oscar Romanelli, Gustavo Pablo Jios, Jorge Luis Autino, Juan Carlos Baronetti, Graciela Teresita Thomas, Horacio Jorge |
| author_role |
author |
| author2 |
Romanelli, Gustavo Pablo Jios, Jorge Luis Autino, Juan Carlos Baronetti, Graciela Teresita Thomas, Horacio Jorge |
| author2_role |
author author author author author |
| dc.subject.none.fl_str_mv |
Química Acid catalysis Chromones Flavones H2P2W18O62.24H2O Silica gel-supported catalyst |
| topic |
Química Acid catalysis Chromones Flavones H2P2W18O62.24H2O Silica gel-supported catalyst |
| dc.description.none.fl_txt_mv |
In this work, we report the use of bulk and silica-supported Wells-Dawson acid (H2P2W18O62.24H2O) as reusable, heterogeneous catalysts to obtain substituted flavones and chromones for the cyclization of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanediones. The reaction experiments were performed using toluene as solvent at reflux and in the absence of solvent, at 110°C. Under these conditions eleven examples were obtained with very good yields (82-91%) and high selectivity. The catalysts were easily recycled and reused without loss of their catalytic activity. The presented synthetic method is a simple, clean and environmentally friendly alternative for synthesizing substituted flavones and chromones. Centro de Investigación y Desarrollo en Ciencias Aplicadas Facultad de Ciencias Agrarias y Forestales Laboratorio de Servicios a la Industria y al Sistema Científico |
| description |
In this work, we report the use of bulk and silica-supported Wells-Dawson acid (H2P2W18O62.24H2O) as reusable, heterogeneous catalysts to obtain substituted flavones and chromones for the cyclization of 1-(2-hydroxyphenyl)-3-aryl-1,3-propanediones. The reaction experiments were performed using toluene as solvent at reflux and in the absence of solvent, at 110°C. Under these conditions eleven examples were obtained with very good yields (82-91%) and high selectivity. The catalysts were easily recycled and reused without loss of their catalytic activity. The presented synthetic method is a simple, clean and environmentally friendly alternative for synthesizing substituted flavones and chromones. |
| publishDate |
2008 |
| dc.date.none.fl_str_mv |
2008 |
| dc.type.none.fl_str_mv |
info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion Articulo http://purl.org/coar/resource_type/c_6501 info:ar-repo/semantics/articulo |
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article |
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publishedVersion |
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http://sedici.unlp.edu.ar/handle/10915/83026 |
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| dc.language.none.fl_str_mv |
eng |
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eng |
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info:eu-repo/semantics/altIdentifier/issn/1551--701 info:eu-repo/semantics/altIdentifier/doi/10.3998/ark.5550190.0009.b12 |
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