دورية أكاديمية
Mechanistic Insights into the Nb2O5 and Niobium Phosphate Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly
| العنوان: | Mechanistic Insights into the Nb2O5 and Niobium Phosphate Catalyzed In Situ Condensation of a Fluorescent Halochromic Assembly |
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| المؤلفون: | Stefania Impellizzeri, Sabrina Simoncelli, Chiara Fasciani, M. Luisa Marín, Geniece L. Hallett-Tapley, Gregory K. Hodgson, Juan C. Scaiano |
| سنة النشر: | 2024 |
| مصطلحات موضوعية: | Organic chemistry, n.e.c, heterogeneous acid catalysts, condensation, catalysts, total internal reflection fluorescence microscopy |
| الوصف: | Solid niobium oxides (Nb2O5· n H2O) and niobium phosphate were used as heterogeneous acid catalysts to promote the condensation between a switchable oxazine and a fluorescent coumarin in an aprotic solvent. The catalysts were found to promote the generation of an active methylene from the enamine-based portion of the oxazine, which was followed by a nucleophilic attack on the aldehyde functionality of the coumarin reagent. In the resulting system, the emission of the conjugated fluorophore can be observed at 670 nm and, thus, the processes occurring at the catalyst surface can be monitored in real time by total internal reflection fluorescence microscopy (TIRFM). |
| نوع الوثيقة: | article in journal/newspaper |
| اللغة: | unknown |
| العلاقة: | https://figshare.com/articles/journal_contribution/Mechanistic_Insights_into_the_Nb2O5_and_Niobium_Phosphate_Catalyzed_In_Situ_Condensation_of_a_Fluorescent_Halochromic_Assembly/26018239Test |
| DOI: | 10.32920/26018239.v1 |
| الإتاحة: | https://doi.org/10.32920/26018239.v1Test https://figshare.com/articles/journal_contribution/Mechanistic_Insights_into_the_Nb2O5_and_Niobium_Phosphate_Catalyzed_In_Situ_Condensation_of_a_Fluorescent_Halochromic_Assembly/26018239Test |
| حقوق: | CC BY 4.0 |
| رقم الانضمام: | edsbas.8E901527 |
| قاعدة البيانات: | BASE |
| DOI: | 10.32920/26018239.v1 |
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