Improvement of the catalytic performance of hybrid nanocomposite based on phosphate-benzimidazole in Knoevenagel condensation
Zakaria Benzekri,
Halima El Aadad,
Sarra Sibous,
Houda Serrar,
Said Boukhris,
Abdelkrim Chahine,
Abdelaziz Souizi
Affiliations
Zakaria Benzekri
Laboratory of Organic Chemistry, Organometallic and Theoretical, Department of Chemistry, Faculty of Sciences, Ibn Tofaïl University, BO 133, 14000, Kenitra, Morocco; Corresponding author.
Halima El Aadad
Laboratory of Physico-Chemistry of Vitreous and Crystallized Materials (LPCVCM), Faculty of Science, Ibn Tofail University, BP 133, 14000 Kenitra, Morocco
Sarra Sibous
Laboratory of Organic Chemistry, Organometallic and Theoretical, Department of Chemistry, Faculty of Sciences, Ibn Tofaïl University, BO 133, 14000, Kenitra, Morocco
Houda Serrar
Laboratory of Organic Chemistry, Organometallic and Theoretical, Department of Chemistry, Faculty of Sciences, Ibn Tofaïl University, BO 133, 14000, Kenitra, Morocco
Said Boukhris
Laboratory of Organic Chemistry, Organometallic and Theoretical, Department of Chemistry, Faculty of Sciences, Ibn Tofaïl University, BO 133, 14000, Kenitra, Morocco
Abdelkrim Chahine
Laboratory of Physico-Chemistry of Vitreous and Crystallized Materials (LPCVCM), Faculty of Science, Ibn Tofail University, BP 133, 14000 Kenitra, Morocco
Abdelaziz Souizi
Laboratory of Organic Chemistry, Organometallic and Theoretical, Department of Chemistry, Faculty of Sciences, Ibn Tofaïl University, BO 133, 14000, Kenitra, Morocco
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.
