Silica-Imidazole Solid Catalyst for N-Glycine Derivatives Synthesis
Journal: Asian Journal of Green Chemistry (Vol.7, No. 1)Publication Date: 2023-03-11
Authors : Kasim Mohammed Hello; Nahla Ghaze Fahad;
Page : 39-46
Keywords : Glycine; Schiff base; Imidazole; Rice Husk Ash; Silica;
Abstract
Schiff base was reacted with α-chloroacetic acid to produce N-(α-chlorobenzyl)-N-phenylglycine derivatives (N-Gly) over solid heterogeneous catalyst. Different N-Gly derivatives were synthesized over the catalyst with approximately 90% yield. Both calculated and theoretical elemental analyses of N-Gly derivatives were in agreement with each other. The functional groups of N-Gly derivatives were proved by the FT-IR spectroscopy. The melting points N-Gly derivatives were matched with those in the literature. The catalyst was produced by immobilizing sodium silicate from rice husk with 3–(chloropropyl)triethoxysilane followed by refluxed the product with p-xylyl-di-imidazolium chloride. The results showed that the optimum catalyst conditions were 5 h as reaction time, 0.25 g mass of catalyst, 90 °C as reaction temperature, and toluene as the best solvent.
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Last modified: 2023-03-11 17:16:54