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Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds
Lanthanoid-containing polyoxometalates (Ln-POMs) have been developed as effective and robust catalysts due to their Lewis acid–base active sites including the oxygen-enriched surfaces of POM and the unique 4f. electron configuration of Ln. As an extension of our interest in Ln-POMs, a series of as-s...
Autores principales: | , , , , , |
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Formato: | Online Artículo Texto |
Lenguaje: | English |
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Nature Publishing Group UK
2022
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Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9283471/ https://www.ncbi.nlm.nih.gov/pubmed/35835941 http://dx.doi.org/10.1038/s41598-022-16384-z |
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author | Daraie, Mansoureh Mirzaei, Masoud Bazargan, Maryam Amiri, Vadjiheh Sadat Sanati, Bita Abdolahi Heravi, Majid M. |
author_facet | Daraie, Mansoureh Mirzaei, Masoud Bazargan, Maryam Amiri, Vadjiheh Sadat Sanati, Bita Abdolahi Heravi, Majid M. |
author_sort | Daraie, Mansoureh |
collection | PubMed |
description | Lanthanoid-containing polyoxometalates (Ln-POMs) have been developed as effective and robust catalysts due to their Lewis acid–base active sites including the oxygen-enriched surfaces of POM and the unique 4f. electron configuration of Ln. As an extension of our interest in Ln-POMs, a series of as-synthesized nanocatalysts K(15)[Ln(BW(11)O(39))(2)] (Ln-B(2)W(22), Ln = La, Ce, Nd, Sm, Gd, and Er) synthesized and fully characterized using different techniques. The Ln(3+) ion with a big ionic radius was chosen as the Lewis acid center which is sandwiched by two mono-lacunary Keggin [BW(11)O(39)](9−) units to form Ln-containing sandwiched type cluster. Consequently, the catalytic activity of nanocatalysts with different Ln was examined in the synthesis of bioactive isatin derivatives and compared under the same optimized reaction conditions in terms of yields of obtained products, indicating the superiority of the nano-Gd-B(2)W(22) in the aforementioned simple one-pot reaction. The effects of different dosages of nanocatalyst, type of solvent, reaction time, and reaction temperature in this catalytic system were investigated and the best results were obtained in the presence of 10 mol% of nano-Gd-B(2)W(22) in water for 12 min at the reflux condition. |
format | Online Article Text |
id | pubmed-9283471 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2022 |
publisher | Nature Publishing Group UK |
record_format | MEDLINE/PubMed |
spelling | pubmed-92834712022-07-16 Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds Daraie, Mansoureh Mirzaei, Masoud Bazargan, Maryam Amiri, Vadjiheh Sadat Sanati, Bita Abdolahi Heravi, Majid M. Sci Rep Article Lanthanoid-containing polyoxometalates (Ln-POMs) have been developed as effective and robust catalysts due to their Lewis acid–base active sites including the oxygen-enriched surfaces of POM and the unique 4f. electron configuration of Ln. As an extension of our interest in Ln-POMs, a series of as-synthesized nanocatalysts K(15)[Ln(BW(11)O(39))(2)] (Ln-B(2)W(22), Ln = La, Ce, Nd, Sm, Gd, and Er) synthesized and fully characterized using different techniques. The Ln(3+) ion with a big ionic radius was chosen as the Lewis acid center which is sandwiched by two mono-lacunary Keggin [BW(11)O(39)](9−) units to form Ln-containing sandwiched type cluster. Consequently, the catalytic activity of nanocatalysts with different Ln was examined in the synthesis of bioactive isatin derivatives and compared under the same optimized reaction conditions in terms of yields of obtained products, indicating the superiority of the nano-Gd-B(2)W(22) in the aforementioned simple one-pot reaction. The effects of different dosages of nanocatalyst, type of solvent, reaction time, and reaction temperature in this catalytic system were investigated and the best results were obtained in the presence of 10 mol% of nano-Gd-B(2)W(22) in water for 12 min at the reflux condition. Nature Publishing Group UK 2022-07-14 /pmc/articles/PMC9283471/ /pubmed/35835941 http://dx.doi.org/10.1038/s41598-022-16384-z Text en © The Author(s) 2022 https://creativecommons.org/licenses/by/4.0/Open Access This article is licensed under a Creative Commons Attribution 4.0 International License, which permits use, sharing, adaptation, distribution and reproduction in any medium or format, as long as you give appropriate credit to the original author(s) and the source, provide a link to the Creative Commons licence, and indicate if changes were made. The images or other third party material in this article are included in the article's Creative Commons licence, unless indicated otherwise in a credit line to the material. If material is not included in the article's Creative Commons licence and your intended use is not permitted by statutory regulation or exceeds the permitted use, you will need to obtain permission directly from the copyright holder. To view a copy of this licence, visit http://creativecommons.org/licenses/by/4.0/ (https://creativecommons.org/licenses/by/4.0/) . |
spellingShingle | Article Daraie, Mansoureh Mirzaei, Masoud Bazargan, Maryam Amiri, Vadjiheh Sadat Sanati, Bita Abdolahi Heravi, Majid M. Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title | Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title_full | Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title_fullStr | Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title_full_unstemmed | Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title_short | Lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
title_sort | lanthanoid-containing polyoxometalate nanocatalysts in the synthesis of bioactive isatin-based compounds |
topic | Article |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC9283471/ https://www.ncbi.nlm.nih.gov/pubmed/35835941 http://dx.doi.org/10.1038/s41598-022-16384-z |
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