Highly effective synthesis of 3, 4-dihydropyrimidin-2 (1H)-ones using pyridinium-N-sulfonic acid bisulfate as a dual-functional catalyst
Journal: Asian Journal of Nanoscience and Materials (Vol.2, No. 4)Publication Date: 2019-08-22
Authors : Sima Dehghani; Maria Merajoddin; Abdolkarim Zare;
Page : 367-375
Keywords : 3; 4-Dihydropyrimidin-2 (1H)-one Acidic ionic liquid Dual-functional catalyst Pyridinium-N-sulfonic acid bisulfate (Py-SO3H][HSO4]) Solvent-free;
Abstract
Acidic ionic liquid pyridinium-N-sulfonic acid bisulfate ([Py-SO3H][HSO4]) has effectively catalyzed the production of 3, 4-dihydropyrimidin-2 (1H)-ones via the condensation reaction of the arylaldehydes with β-ketoesters and urea under solvent-free conditions. Due to the dual-functionality of [Py-SO3H][HSO4] (bearing acidic and basic sites), it was highly effective and general catalyst for the reaction. Additionally, an attractive mechanism for the dual-functionality of the catalyst was proposed.
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Last modified: 2019-08-22 04:30:10