Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles

La optimización de reacciones químicas mediante el uso de catalizadores permite reducir los tiempos de reacción e incrementar el rendimiento de estas. Los catalizadores homogéneos de tipo metal-carbeno NHC mesoiónicos, suelen presentar una alta selectividad, una actividad mejorada y mejor estabilida...

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Autores:
Prada Rojas, Lizeth Daniela
Tipo de recurso:
Trabajo de grado de pregrado
Fecha de publicación:
2023
Institución:
Universidad Santo Tomás
Repositorio:
Repositorio Institucional USTA
Idioma:
spa
OAI Identifier:
oai:repository.usta.edu.co:11634/53255
Acceso en línea:
http://hdl.handle.net/11634/53255
Palabra clave:
Catalyst
Methylation
DES
Cobalt-NHC
Carbene
solventes orgánicos
catalizadores
reacciones químicas
reacciones orgánicas
Catalizador
Metilación
DES
Cobalto-NHC
Carbeno
Rights
openAccess
License
Atribución-NoComercial-CompartirIgual 2.5 Colombia
id SANTOTOMAS_33f5fed85804d671fe55157994dd608d
oai_identifier_str oai:repository.usta.edu.co:11634/53255
network_acronym_str SANTOTOMAS
network_name_str Repositorio Institucional USTA
repository_id_str
dc.title.spa.fl_str_mv Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
title Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
spellingShingle Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
Catalyst
Methylation
DES
Cobalt-NHC
Carbene
solventes orgánicos
catalizadores
reacciones químicas
reacciones orgánicas
Catalizador
Metilación
DES
Cobalto-NHC
Carbeno
title_short Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
title_full Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
title_fullStr Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
title_full_unstemmed Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
title_sort Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles
dc.creator.fl_str_mv Prada Rojas, Lizeth Daniela
dc.contributor.advisor.none.fl_str_mv Osorio Martínez, Carlos Alberto
Alvarado Rueda, Lizeth Johanna
dc.contributor.author.none.fl_str_mv Prada Rojas, Lizeth Daniela
dc.subject.keyword.spa.fl_str_mv Catalyst
Methylation
DES
Cobalt-NHC
Carbene
topic Catalyst
Methylation
DES
Cobalt-NHC
Carbene
solventes orgánicos
catalizadores
reacciones químicas
reacciones orgánicas
Catalizador
Metilación
DES
Cobalto-NHC
Carbeno
dc.subject.lemb.spa.fl_str_mv solventes orgánicos
catalizadores
reacciones químicas
reacciones orgánicas
dc.subject.proposal.spa.fl_str_mv Catalizador
Metilación
DES
Cobalto-NHC
Carbeno
description La optimización de reacciones químicas mediante el uso de catalizadores permite reducir los tiempos de reacción e incrementar el rendimiento de estas. Los catalizadores homogéneos de tipo metal-carbeno NHC mesoiónicos, suelen presentar una alta selectividad, una actividad mejorada y mejor estabilidad en comparación con sistemas análogos más clásicos en los que se utilizan ligandos de organofosfina. El principal impacto negativo en la síntesis de catalizadores es la utilización de solventes orgánicos, por lo que se ha propuesto el uso de solventes eutécticos profundos (DES), los cuales suelen estar constituidos por dos o tres compuestos; una sal de amonio cuaternaria complejada con un compuesto donor de hidrogeno o una sal metálica. En este trabajo, se planteó la síntesis de un catalizador de tipo metal-carbeno NHC mesoiónico mediante una serie de reacciones “click chemistry”, metilación y reacciones de acomplejación con un metal de transición por vía tradicional y por vía DES. Los compuestos obtenidos se caracterización mediante infrarrojo, resonancia magnética y puntos de fusión. Y se evaluó la actividad catalítica del metal-carbenoNHC obtenido en reacciones de Biginelli. Estos procesos se compararon en términos de rendimientos de reacción. La complejación del catalizador se vio favorecida por el uso de DES, pese a que en la “Click chemistry” y la metilación el rendimiento fue menor a que por la vía tradicional. Para poder evaluar su actividad catalítica es necesario continuar probando con diferentes reacciones.
publishDate 2023
dc.date.accessioned.none.fl_str_mv 2023-12-18T19:07:04Z
dc.date.available.none.fl_str_mv 2023-12-18T19:07:04Z
dc.date.issued.none.fl_str_mv 2023-12-18
dc.type.local.spa.fl_str_mv Trabajo de grado
dc.type.version.none.fl_str_mv info:eu-repo/semantics/acceptedVersion
dc.type.category.spa.fl_str_mv Formación de Recurso Humano para la Ctel: Trabajo de grado de Pregrado
dc.type.coar.none.fl_str_mv http://purl.org/coar/resource_type/c_7a1f
dc.type.drive.none.fl_str_mv info:eu-repo/semantics/bachelorThesis
format http://purl.org/coar/resource_type/c_7a1f
status_str acceptedVersion
dc.identifier.citation.spa.fl_str_mv Prada Rojas, L.D. (2023). Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles. [Trabajo de pregrado]. Universidad Santo Tomás, Bucaramanga, Colombia.
dc.identifier.uri.none.fl_str_mv http://hdl.handle.net/11634/53255
dc.identifier.reponame.spa.fl_str_mv reponame:Repositorio Institucional Universidad Santo Tomás
dc.identifier.instname.spa.fl_str_mv instname:Universidad Santo Tomás
dc.identifier.repourl.spa.fl_str_mv repourl:https://repository.usta.edu.co
identifier_str_mv Prada Rojas, L.D. (2023). Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles. [Trabajo de pregrado]. Universidad Santo Tomás, Bucaramanga, Colombia.
reponame:Repositorio Institucional Universidad Santo Tomás
instname:Universidad Santo Tomás
repourl:https://repository.usta.edu.co
url http://hdl.handle.net/11634/53255
dc.language.iso.spa.fl_str_mv spa
language spa
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spelling Osorio Martínez, Carlos AlbertoAlvarado Rueda, Lizeth JohannaPrada Rojas, Lizeth Daniela2023-12-18T19:07:04Z2023-12-18T19:07:04Z2023-12-18Prada Rojas, L.D. (2023). Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sostenibles. [Trabajo de pregrado]. Universidad Santo Tomás, Bucaramanga, Colombia.http://hdl.handle.net/11634/53255reponame:Repositorio Institucional Universidad Santo Tomásinstname:Universidad Santo Tomásrepourl:https://repository.usta.edu.coLa optimización de reacciones químicas mediante el uso de catalizadores permite reducir los tiempos de reacción e incrementar el rendimiento de estas. Los catalizadores homogéneos de tipo metal-carbeno NHC mesoiónicos, suelen presentar una alta selectividad, una actividad mejorada y mejor estabilidad en comparación con sistemas análogos más clásicos en los que se utilizan ligandos de organofosfina. El principal impacto negativo en la síntesis de catalizadores es la utilización de solventes orgánicos, por lo que se ha propuesto el uso de solventes eutécticos profundos (DES), los cuales suelen estar constituidos por dos o tres compuestos; una sal de amonio cuaternaria complejada con un compuesto donor de hidrogeno o una sal metálica. En este trabajo, se planteó la síntesis de un catalizador de tipo metal-carbeno NHC mesoiónico mediante una serie de reacciones “click chemistry”, metilación y reacciones de acomplejación con un metal de transición por vía tradicional y por vía DES. Los compuestos obtenidos se caracterización mediante infrarrojo, resonancia magnética y puntos de fusión. Y se evaluó la actividad catalítica del metal-carbenoNHC obtenido en reacciones de Biginelli. Estos procesos se compararon en términos de rendimientos de reacción. La complejación del catalizador se vio favorecida por el uso de DES, pese a que en la “Click chemistry” y la metilación el rendimiento fue menor a que por la vía tradicional. Para poder evaluar su actividad catalítica es necesario continuar probando con diferentes reacciones.The optimization of chemical reactions using catalysts allows to reduce reaction times and increase reaction yields. Homogeneous mesoionic NHC metal-carbene catalysts usually show high selectivity, improved activity and better stability compared to more classical analogous systems using organophosphine ligands. The main negative impact in the synthesis of catalysts is the use of organic solvents, so the use of deep eutectic solvents (DESs) has been proposed, which usually consist of two or three compounds; a quaternary ammonium salt complexed with a hydrogen donor compound or a metal salt. In this work, the synthesis of a mesoionic NHC metal-carbene catalyst by a series of "click chemistry" reactions, methylation, and complexation reactions with a transition metal by traditional and DES routes were proposed. The obtained compounds were characterized by infrared, magnetic resonance and melting points. And the catalytic activity of the metal-carbene-NHC obtained in Biginelli reactions was evaluated. These processes were compared in terms of reaction yields. The complexation of the catalyst was favored using DES, although in click chemistry and methylation the yield was lower than by the traditional route. To evaluate its catalytic activity, it is necessary to continue testing with different reactions.Químico Ambientalhttp://www.ustabuca.edu.co/ustabmanga/presentacionPregradoapplication/pdfspaUniversidad Santo TomásPregrado Química AmbientalFacultad de Química AmbientalAtribución-NoComercial-CompartirIgual 2.5 Colombiahttp://creativecommons.org/licenses/by-nc-sa/2.5/co/Abierto (Texto Completo)info:eu-repo/semantics/openAccesshttp://purl.org/coar/access_right/c_abf2Síntesis de catalizadores metal-carbenos N-heterocíclicos (NHC) y evaluación de su actividad catalítica en condiciones ambientalmente sosteniblesCatalystMethylationDESCobalt-NHCCarbenesolventes orgánicoscatalizadoresreacciones químicasreacciones orgánicasCatalizadorMetilaciónDESCobalto-NHCCarbenoTrabajo de gradoinfo:eu-repo/semantics/acceptedVersionFormación de Recurso Humano para la Ctel: Trabajo de grado de Pregradohttp://purl.org/coar/resource_type/c_7a1finfo:eu-repo/semantics/bachelorThesisCRAI-USTA BucaramangaAguilera, E. 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