Synthesis of 3,4-Dihydro-2(1H)-Pyrimidones Via Biginelli Reaction in Organized Media Using Ionic Liquids and Solid Acid Catalysts
Journal Title: Journal of Chemistry and Applied Biochemistry - Year 2015, Vol 2, Issue 2
Abstract
5-Ethoxycarbonyl-4-aryl-6-methyl-3,4-dihydropyrimidin-2(1H)-one have been synthesized in good yield by the condensation of aromatic aldehydes, ethylacetoacetate and urea in the presence of acidic ionic liquids derived from dialkylamines as the catalyst under thermal heating in the absence of VOC. The synthesis of the target molecules revisited using acidic ion exchange resin namely Amberlite IR 120(H+) in a solid phase reaction. The two methods compared with respect to yields obtained, reaction time, ease of separation of products, cost and recyclability of the catalysts.
Authors and Affiliations
Pranab Jyoti DAS
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Synthesis of 3,4-Dihydro-2(1H)-Pyrimidones Via Biginelli Reaction in Organized Media Using Ionic Liquids and Solid Acid Catalysts
5-Ethoxycarbonyl-4-aryl-6-methyl-3,4-dihydropyrimidin-2(1H)-one have been synthesized in good yield by the condensation of aromatic aldehydes, ethylacetoacetate and urea in the presence of acidic ionic liquids derived fr...
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