Improvement of the catalytic performance of hybrid nanocomposite based on phosphate-benzimidazole in Knoevenagel condensation

Autor: Zakaria Benzekri, Halima El Aadad, Sarra Sibous, Houda Serrar, Said Boukhris, Abdelkrim Chahine, Abdelaziz Souizi
Jazyk: angličtina
Rok vydání: 2020
Předmět:
Zdroj: Heliyon, Vol 6, Iss 11, Pp e05293- (2020)
Druh dokumentu: article
ISSN: 2405-8440
DOI: 10.1016/j.heliyon.2020.e05293
Popis: In this work, we have developed a simple and very effective experimental strategy for the reaction of Knoevenagel via the condensation of aromatic aldehydes substituted with active methylene compounds in the presence of hybrid nanocomposites xMCl2-yNaPO3 (MCl2 = 2,2′-dibenzimidazolyl butane dichlorhydrates), under ecological conditions. The Phosphate-Benzimidazole hybrid nanocomposite as heterogeneous catalysts has demonstrated a high catalytic activity for the Knoevenagel condensation in ethanol as an ecological solvent. It has several advantages such as light reaction conditions, a simple and ecological working procedure. Meanwhile, xMCl2-yNaPO3 can be recovered by simple filtration and this catalytic system having an interesting lifetime (five cycles) with no decrease in activity.
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