Synthetic Communications

Pyridinium-based brønsted acidic ionic liquid as a highly efficient catalyst for one-pot synthesis of dihydropyrimidinones

AR Hajipour, M Seddighi

Index: Hajipour, Abdol R.; Seddighi, Mohadeseh Synthetic Communications, 2012 , vol. 42, # 2 p. 227 - 235

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Citation Number: 16

Abstract

In this work, the synthesis and characterization of 3-carboxypyridinium hydrogensulfate ([Hcpy]HSO 4 ) as a new Brønsted acidic ionic liquid are reported. This reusable, inexpensive, and green catalyst was employed for one-pot condensation of 1,3-dicarbonyl compounds, aromatic aldehydes and urea or thiourea for the synthesis of the corresponding 3,4-Dihydropyrimidin-2(1H)-ones. The reactions were carried out under solvent-free and ...