Mechanistic insights into the Nb2O5 and niobium phosphate catalyzed in situ condensation of a fluorescent halochromic assembly

Solid niobium oxides (Nb2O5·nH2O) 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-base...

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Detalles Bibliográficos
Autores principales: Impellizzeri, S., Simoncelli, S., Fasciani, C., Marin, M.L., Hallett-Tapley, G.L., Hodgson, G.K., Scaiano, J.C.
Formato: JOUR
Materias:
Catalysts
Condensation
Fluorescence
Fluorescence microscopy
Fluorophores
Niobium
Nitrogen compounds
Refractive index
Aprotic solvents
Catalyst surfaces
Heterogeneous acid catalysts
In-situ condensations
Niobium phosphates
Nucleophilic attack
Switchable
Total internal reflection fluorescence microscopy
Niobium oxide
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_20444753_v5_n1_p169_Impellizzeri
Aporte de:
Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires

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