INVESTIGADORES
ROMANELLI Gustavo Pablo
artículos
Título:
New application of decaniobate salt as basic solid in the synthesis of 4H-pyrans by microwave assisted multicomponent reactions
Autor/es:
GUTIERREZ, LUISA F.; NOPE, ELIANA; ROJAS, HUGO A.; CUBILLOS, JAIRO A.; SATHICQ, ÁNGEL G.; ROMANELLI, GUSTAVO P.; MARTÍNEZ, JOSÉ J.
Revista:
RESEARCH ON CHEMICAL INTERMEDIATES
Editorial:
SPRINGER
Referencias:
Año: 2018 vol. 44 p. 5559 - 5568
ISSN:
0922-6168
Resumen:
This study focuses on the search of new applications of polyoxometalates known as decaniobate ions [Nb10O28]6−. The decaniobates can be used as basic solid catalysts in multicomponent reactions to obtain good yields to 4H-pyrans (> 95%) under microwave radiation and solvent-free conditions, using several aldehydes with different electron-withdrawing or electron donor substituents. The synthesis of (TMA)6 [Nb10O28]6H2O was performed following a simple protocol (HPNb), which was modified to decrease the number of hexaniobate species that are formed as impurities (HPNb-HF).
