A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions

In this communication, four materials (CeO2, CeO2(Cu), MnOx, and MnOx(Cu))were prepared, characterized and tested as catalysts, in solvent-free conditions, for the multicomponent Hantzsch reactions to obtain alternatively the 1,4-dihydropyridine or 2-phenylpyridine depending on the reaction conditio...

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Detalles Bibliográficos
Autores principales: D'Alessandro, Oriana, Sathicq, Ángel Gabriel, Sambeth, Jorge Enrique, Thomas, Horacio Jorge, Romanelli, Gustavo Pablo
Formato: Articulo Comunicacion
Lenguaje:Inglés
Publicado: 2015
Materias:
Química
Cerium and manganese oxides
Hantzsch reaction
1,4-Dihydropyridine 2-Phenylpyridine
Green chemistry
Acceso en línea:http://sedici.unlp.edu.ar/handle/10915/104904
Aporte de:
SEDICI (UNLP) de Universidad Nacional de La Plata
id I19-R120-10915-104904
record_format dspace
institution Universidad Nacional de La Plata
institution_str I-19
repository_str R-120
collection SEDICI (UNLP)
language Inglés
topic Química
Cerium and manganese oxides
Hantzsch reaction
1,4-Dihydropyridine 2-Phenylpyridine
Green chemistry
spellingShingle Química
Cerium and manganese oxides
Hantzsch reaction
1,4-Dihydropyridine 2-Phenylpyridine
Green chemistry
D'Alessandro, Oriana
Sathicq, Ángel Gabriel
Sambeth, Jorge Enrique
Thomas, Horacio Jorge
Romanelli, Gustavo Pablo
A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
topic_facet Química
Cerium and manganese oxides
Hantzsch reaction
1,4-Dihydropyridine 2-Phenylpyridine
Green chemistry
description In this communication, four materials (CeO2, CeO2(Cu), MnOx, and MnOx(Cu))were prepared, characterized and tested as catalysts, in solvent-free conditions, for the multicomponent Hantzsch reactions to obtain alternatively the 1,4-dihydropyridine or 2-phenylpyridine depending on the reaction conditions. 1,4-Dihydropyridine 4 was the main product formed at 80 °C (76%), and 2-phenylpyridine 7 was the main product at 40 °C (91%), in oxidant-free conditions, using CeO2 catalyst. It is the first report that shows that, not only the temperature but also the nature of the catalyst may change the product selectivity in Hantzsch reactions.
format Articulo
Comunicacion
author D'Alessandro, Oriana
Sathicq, Ángel Gabriel
Sambeth, Jorge Enrique
Thomas, Horacio Jorge
Romanelli, Gustavo Pablo
author_facet D'Alessandro, Oriana
Sathicq, Ángel Gabriel
Sambeth, Jorge Enrique
Thomas, Horacio Jorge
Romanelli, Gustavo Pablo
author_sort D'Alessandro, Oriana
title A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
title_short A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
title_full A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
title_fullStr A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
title_full_unstemmed A study of the temperature effect on Hantzsch reaction selectivity using Mn and Ce oxides under solvent-free conditions
title_sort study of the temperature effect on hantzsch reaction selectivity using mn and ce oxides under solvent-free conditions
publishDate 2015
url http://sedici.unlp.edu.ar/handle/10915/104904
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