A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis
Molybdophosphoric acid/silica-alumina composites are synthesized a through a process described, in which the heteropolyacid was impregnated on different silica-aluminas, obtained by sol-gel. Three different techniques were used to prepare the samples. The catalysts were prepared by incipient wetness...
| Main Authors: | , , , , |
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| Format: | Online |
| Language: | spa |
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Universidad Pedagógica y Tecnológica de Colombia
2022
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| Subjects: | |
| Online Access: | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/14165 |
| _version_ | 1801706354111414272 |
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| author | V. Palermo D. Ruiz A. Sathicq P. Vázquez G. Romanelli |
| author_facet | V. Palermo D. Ruiz A. Sathicq P. Vázquez G. Romanelli |
| author_sort | V. Palermo |
| collection | OJS |
| description | Molybdophosphoric acid/silica-alumina composites are synthesized a through a process described, in which the heteropolyacid was impregnated on different silica-aluminas, obtained by sol-gel. Three different techniques were used to prepare the samples. The catalysts were prepared by incipient wetness impregnation and different thermal treatments were applied. The hybrid systems were characterized by using SBET, DRX, XRD and acidity measurements.
The catalytic activity of these materials was tested in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-1,3-propanedione to 2-(2-furyl)-chromones. The transformation gives very good yields of product, free of secondary products. Environmental benign procedure, and easy catalyst separation, is relevant features of this methodology. In this way the catalyst can be used and reused six cycles without loss of catalytic activity. The most active catalyst was also used in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-2-propen-1-one and the methodology can be extended to the synthesis of other 2-(2-(furyl)-chromones and chromanones. The green context for this new procedure was confirmed by greenmetrics parameters. |
| format | Online |
| id | oai:oai.revistas.uptc.edu.co:article-14165 |
| institution | Revista Ciencia en Desarrollo |
| language | spa |
| publishDate | 2022 |
| publisher | Universidad Pedagógica y Tecnológica de Colombia |
| record_format | ojs |
| spelling | oai:oai.revistas.uptc.edu.co:article-141652023-06-26T20:42:54Z A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis V. Palermo D. Ruiz A. Sathicq P. Vázquez G. Romanelli Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones Molybdophosphoric acid/silica-alumina composites are synthesized a through a process described, in which the heteropolyacid was impregnated on different silica-aluminas, obtained by sol-gel. Three different techniques were used to prepare the samples. The catalysts were prepared by incipient wetness impregnation and different thermal treatments were applied. The hybrid systems were characterized by using SBET, DRX, XRD and acidity measurements. The catalytic activity of these materials was tested in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-1,3-propanedione to 2-(2-furyl)-chromones. The transformation gives very good yields of product, free of secondary products. Environmental benign procedure, and easy catalyst separation, is relevant features of this methodology. In this way the catalyst can be used and reused six cycles without loss of catalytic activity. The most active catalyst was also used in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-2-propen-1-one and the methodology can be extended to the synthesis of other 2-(2-(furyl)-chromones and chromanones. The green context for this new procedure was confirmed by greenmetrics parameters. Molybdophosphoric acid/silica-alumina composites are synthesized a through a process described, in which the heteropolyacid was impregnated on different silica-aluminas, obtained by sol-gel. Three different techniques were used to prepare the samples. The catalysts were prepared by incipient wetness impregnation and different thermal treatments were applied. The hybrid systems were characterized by using SBET, DRX, XRD and acidity measurements. The catalytic activity of these materials was tested in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-1,3-propanedione to 2-(2-furyl)-chromones. The transformation gives very good yields of product, free of secondary products. Environmental benign procedure, and easy catalyst separation, is relevant features of this methodology. In this way the catalyst can be used and reused six cycles without loss of catalytic activity. The most active catalyst was also used in the solvent-free cyclization of 1-(2-hydroxyphenyl)-3-(2-furyl)-2-propen-1-one and the methodology can be extended to the synthesis of other 2-(2-(furyl)-chromones and chromanones. The green context for this new procedure was confirmed by greenmetrics parameters. Universidad Pedagógica y Tecnológica de Colombia 2022-01-29 info:eu-repo/semantics/article info:eu-repo/semantics/publishedVersion application/pdf https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/14165 10.19053/01217488.v13.n1.2022.14165 Ciencia En Desarrollo; Vol. 13 No. 1 (2022): Vol. 13 Núm. 1 (2022): Vol 13, Núm.1 (2022): Enero-Junio; 93-102 Ciencia en Desarrollo; Vol. 13 Núm. 1 (2022): Vol. 13 Núm. 1 (2022): Vol 13, Núm.1 (2022): Enero-Junio; 93-102 2462-7658 0121-7488 spa https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/14165/12525 |
| spellingShingle | Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones V. Palermo D. Ruiz A. Sathicq P. Vázquez G. Romanelli A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_alt | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_full | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_fullStr | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_full_unstemmed | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_short | A hybrid system bases on silica-alumina and Keggin heteropolyacids as catalyst in the suitable 2-(2-furyl)-chromones and chromanones synthesis |
| title_sort | hybrid system bases on silica alumina and keggin heteropolyacids as catalyst in the suitable 2 2 furyl chromones and chromanones synthesis |
| topic | Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones |
| topic_facet | Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones Keggin heteropolyacids, Silica-alumina, Sol–gel synthesis, 2-(2-Furyl)-chromones, 2-(2-Furyl)-chromanones |
| url | https://revistas.uptc.edu.co/index.php/ciencia_en_desarrollo/article/view/14165 |
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