ZnO nanoparticles: An efficient catalyst for transesterification reaction of α-keto carboxylic esters

Recent advances in the transesterification of β-keto esters

“…Further studies indicated that the reaction is selective for b-keto esters, as substrates containing both ester and b-keto ester functionalities reacted exclusively at successfully optimised the transesterication of a-keto esters and simple esters utilising zinc oxide nanoparticles, achieving yields up to 97%. 77 The modication of both the structure and morphology of the oxide signicantly improved activity.…”

“…More recently, Soliman et al successfully optimised the transesterification of α-keto esters and simple esters utilising zinc oxide nanoparticles, achieving yields up to 97%. 77 The modification of both the structure and morphology of the oxide significantly improved activity.…”

Zinc‐mediated efficient and environmentally benign synthesis of salicylate esters

“…Zinc (II) cation are used in various forms, including ZnCl 2 , Zn(OAc) 2 , ZnO, and complexes of Zn(II). All of them enhance the reaction rates and improved reaction yields under milder conditions compared with traditional catalysts 19–21 …”

Catalytic behavior of a ZnO/TiO2composite in the synthesis of polycarbonate diol

“…Chen et al 34 synthesized a catalyst of SO 4 2− loaded on TiO 2 for transesterication in the production of biodiesel. On the other hand, various catalysts has also been prepared based on ZnO for transesterication, 35,36 because the rich oxygen vacancies on the surface of ZnO can enhance the Lewis acidity of the catalyst and improve the catalytic activity. 37 However, it is not easy to recycle, because ZnO is difficult to be extracted from the product.…”