| Journal: | Journal of the Mexican Chemical Society |
| Database: | PERIÓDICA |
| System number: | 000384120 |
| ISSN: | 1665-9686 |
| Authors: | Hassankhani, Asadollah1 |
| Institutions: | 1University of Advanced Technology, Institute of Science and High Technology and Environmental Sciences, Kermán. Irán |
| Year: | 2015 |
| Season: | Ene-Mar |
| Volumen: | 59 |
| Number: | 1 |
| Country: | México |
| Language: | Inglés |
| Document type: | Artículo |
| Approach: | Experimental, analítico |
| Spanish abstract | Se describe un procedimiento eficiente y benigno al medio ambiente para la síntesis de 4,4'-arilmetilen-bis(3-metil-1-fenil-1H-pirazol-5oles) por condensación de multicomponentes en un solo paso de aril aldehídos, fenil hidracina y acetoacetato de etilo catalizada por Ce(SO4)2.4H2O como un catalizador con alta actividad catalítica y reusabilidad a125 °C bajo condiciones libres de disolvente. Las reacciones proceden eficientemente en tiempos de reacción de 5-12 min en rendimientos de 81-98%. Esta nueva metodología verde es interesante puesto que minimiza costos de operación y evita la contaminación ambiental |
| English abstract | A new, efficient and environmentally benign protocol for the one-pot, multicomponent synthesis of 4,4'-arylmethylene-bis(3-methyl1-phenyl-1H-pyrazol-5-ols) by condensation of aryl aldehydes, phenyl hydrazine and ethyl acetoacetate catalyzed by Ce(SO4)2.4H2O as an ecofriendly catalyst with high catalytic activity and reusability at 125 °C under solvent-free conditions is reported. The reaction proceeds to completion within 5-12 min in 81-98% yield. This new green methodology is of interest due to minimizing the cost of operational hazards and environmental pollution, its excellent yields, short reaction time and high catalyst activity and reusability |
| Disciplines: | Química, Biología |
| Keyword: | Fisicoquímica y química teórica, Ecología, Química verde, Catálisis heterogénea, Aldehídos, Acetoacetato de etilo, Sulfato de cesio |
| Keyword: | Chemistry, Biology, Physical and theoretical chemistry, Ecology, Green chemistry, Heterogeneous catalysts, Aldehydes, Cesium sulphate |
| Full text: | Texto completo (Ver HTML) |
