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NbCl5-promoted the synthesis of 4H-pyrans through multicomponent reaction
(2016-01-01)
Multicomponent reactions between β-ketoesters and benzaldehydes for the synthesis of 4H-pyran derivatives promoted by niobium pentachloride (NbCl5) were carried out, providing good yields and reasonable reaction times under ...
Generación de diversidad molecular vía estrategias de diseño multicomponente
(Universidad Autónoma Metropolitana (México). Unidad Azcapotzalco. División de Ciencias Básicas e Ingeniería., 2015)
En este trabajo se describen diversos experimentos basados en el diseño racional de reacciones multicomponentes con el objetivo de preparar nuevas estructuras moleculares vía modificación a la reacción de Biginelli. Al ...
Solvent-Free Synthesis of Functionalized Pyridine Derivatives Using Wells— -Dawson Heteropolyacid as Catalyst
(Elsevier, 2011-11-29)
Wells-Dawson heteropolyacids (H6P2W18O62·24H2O) were used as catalysts in the Hantzsch-like multicomponent condensation reaction with 3-formylchromones as aldehyde component, a β-ketoester and ammonium acetate, under ...
Solution versus Fluorous versus Solid-Phase Synthesis of 2,5-Disubstituted 1,3-Azoles. Preliminary Antibacterial Activity Studies
(American Chemical Society, 2009-11)
A small library of compounds with an oxa(thia)zole scaffold and structural diversity in both positions 2 and 5 has been synthesized. Double acylation of a protected glycine affords intermediate α-amido-β-ketoesters, which ...
Synthesis of Biginelli adducts using a Preyssler heteropolyacid in silica matrix from biomass building block
(Elsevier Inc, 2018-12)
An efficient, suitable and high yielding method has been developed employing the use of the renewable platform molecule furfural for the synthesis of Biginelli derivatives via a three-component domino reaction through a ...
Síntese de tetra-hidropiridinas por meio de reações multicomponentes
(Universidade Estadual Paulista (Unesp), 2015-04-06)
Multicomponent Reactions are defined as reactions between three or more reagents in a single reaction step in the same reaction vial, forming a product that includes the majority of atoms and structural characteristics of ...
Síntese de tetra-hidropiridinas por meio de reações multicomponentes
(Universidade Estadual Paulista (UNESP), 2015)
Síntese de tetra-hidropiridinas por meio de reações multicomponentes
(Universidade Estadual Paulista (Unesp), 2015)