154866-92-9Relevant articles and documents
Glycerol as an alternative green reaction medium for multicomponent reactions using PS-PEG-OSO3H as catalyst
Quan, Zheng-Jun,Ren, Rong-Guo,Da, Yu-Xia,Zhang, Zhang,Wang, Xi-Cun
, p. 3106 - 3116 (2011)
Development of green solvents from renewable resources has gained much attention recently, because of the extensive uses of solvents in almost all of the chemical industry and the predicted disappearance of fossil oil. Here we show that glycerol and PS-PE
Biginelli reaction in aqueous medium: a greener and sustainable approach to substituted 3,4-dihydropyrimidin-2(1H)-ones
Polshettiwar, Vivek,Varma, Rajender S.
, p. 7343 - 7346 (2007)
An environmentally benign aqueous Biginelli protocol for the synthesis of substituted 3,4-dihydropyrimidin-2(1H)-ones using polystyrenesulfonic acid (PSSA) as a catalyst has been achieved. These microwave-assisted reactions proceed efficiently in water in
Synthesis method of dihydropyrimidinone compound
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Paragraph 0034-0036; 0040-0041; 0044; 0070-0075; 0081, (2021/05/19)
The invention discloses a synthesis method of a dihydropyrimidone compound, which belongs to the technical field of organic synthesis, and comprises the following steps: by taking benzaldehyde or a derivative thereof, ethyl acetoacetate or acetylacetone a
Aiding the versatility of simple ammonium ionic liquids by the synthesis of bioactive 1,2,3,4-tetrahydropyrimidine, 2-aminothiazole and quinazolinone derivatives
Kakati, Praachi,Singh, Preeti,Yadav, Priyanka,Awasthi, Satish Kumar
, p. 6724 - 6738 (2021/04/22)
Simple ammonium ionic liquids [ILs] are efficient, green, environmentally friendly catalysts in promoting the Biginelli condensation reaction, Hantzsch reaction and Niementowski reaction to afford 1,2,3,4-tetrahydropyrimidine, 2-aminothiazole and quinazolinone derivatives respectively by eliminating the need for harmful volatile organic solvents. These [ILs] are air and water stable, easy to prepare and cost-effective. The effects of the anions and cations present in [IL] on reactions were investigated. The results clearly indicated that the Biginelli condensation reaction, Hantzsch reaction and Niementowski reaction were heavily influenced by the acidity of [IL], and among various ammonium ionic liquids, [Et3NH][HSO4] showed the best catalytic activity. Furthermore, [IL] could be easily separated and reused with a slight loss of its activity. This technique provided a good alternative way for the industrial synthesis of 1,2,3,4-tetrahydropyrimidinones, 2-aminothiazoles and quinazolinones. The present processes are eco-friendly methods for the synthesis of these derivatives authenticated by several green parameters, namely,E-factor, process mass intensity, reaction mass efficiency, atom economy, and carbon efficiency.
Poly(N-vinyl-2-pyrrolidone)-supported ferric chloride: An effective reusable heterogeneous catalyst for one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones via three-component Biginelli reaction
Donyapeyma, Ghazaleh,Rahmatpour, Ali
, (2022/01/19)
An environmentally benign three-component Biginelli protocol for the one-pot synthesis of substituted 3,4-dihydropyrimidin-2(1H)-ones/thiones using an accessible, nontoxic, easy to handle, and recoverable macromolecular Lewis acidic catalyst is developed.