126827-25-6Relevant articles and documents
Decoration of multi-walled carbon nanotubes with NiO nanoparticles and investigation on their catalytic activity to synthesize pyrimidinone heterocycles
Safari, Javad,Gandomi-Ravandi, Soheila
, p. 147 - 154 (2015)
A supported carbon material is shown to be a highly efficient, eco-friendly and recyclable solid acid catalyst for the Biginelli reaction of aldehyde, β-ketoester and urea or thiourea under microwave irradiation in the absence of solvent. This method offe
Vegetable oil as a highly effective 100% bio-based alternative solvent for the one-pot multicomponent Biginelli reaction
Hunt, Andrew J.,Noppawan, Pakin,Sangon, Suwiwat,Supanchaiyamat, Nontipa
, p. 5766 - 5774 (2021)
Multicomponent one-pot Biginelli reactions have been successfully performed using vegetable oil as bio-based, non-toxic, and environmentally friendly solvents. Palm oil was demonstrated to be a highly effective greener solvent as compared to petroleum-bas
Synthesis of 3,4-dihydropyrimidin-2(1H)-one via one-pot Biginelli reaction under solvent-free conditions
Peng, Huan,Hu, Yulin,Xing, Rong,Fang, Dong
, p. 2053 - 2058 (2015)
Three novel heteropolyanion-based acidic ionic liquids, [TMAPS]H2PMo12O40, [TEAPS]H2PMo12O40, and [TBAPS]H2PMo12O40, were used as efficient catalysts for th
Hetero Diels-Alder reaction: A novel strategy to regioselective synthesis of pyrimido[4,5-d]pyrimidine analogues from Biginelli derivative
Sharma, Pratibha,Kumar, Ashok,Rane, Nilesh,Gurram, Vamsi
, p. 4237 - 4248 (2005)
A number of potent pyrimido[4,5-d]pyrimidine analogues have been efficiently synthesized by hetero Diels-Alder cycloaddition of 6-methyl-4-phenyl-2-thioxo-1,2,3,4-tetrahydropyrimidine-5-carboxylic acid methyl ester, a Biginelli compound with N-arylidine-N
Studies on the Biginelli reaction: A mild and selective route to 3,4-dihydropyrimidin-2(1H)-ones via enamine intermediates
Mabry, John,Ganem, Bruce
, p. 55 - 56 (2006)
L-Proline methyl ester hydrochloride was found to be an effective catalyst for assembling (±)-dihydropyrimidinones under mild conditions. Mechanistic insights into the useful selectivity elements of this amine-catalyzed process are also reported.
Niobium Oxides as Heterogeneous Catalysts for Biginelli Multicomponent Reaction
Do Nascimento, Letícia Gomes,Dias, Isabela Milhomem,Meireles De Souza, Guilherme Botelho,Dancini-Pontes, Isabela,Fernandes, Nádia Regina Camargo,De Souza, Paulo Sérgio,Roberto De Oliveira, Guilherme,Alonso, Christian Gon?alves
, p. 11170 - 11180 (2020)
This study reports a simple, reusable, and recoverable niobium-based heterogeneous catalysts for Biginelli multicomponent reactions. Different methods of catalysts preparation were investigated. For this purpose, HY-340 (Nb2O5·nH2O) and Nb2O5 were chemica
One-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones using chloroacetic acid as catalyst
Yu, Yang,Liu, Di,Liu, Chunsheng,Luo, Genxiang
, p. 3508 - 3510 (2007)
A simple and effective synthesis of 3,4-dihydropyrimidin-2(1H)-one derivatives from aldehydes, 1,3-dicarbonyl compounds and urea or thiourea using chloroacetic acid as catalyst under solvent-free conditions is described. Compared with the classical Bigine
Alkylammonium and alkylimidazolium perhaloborates, phosphates, and aluminates as catalysts in the Biginelli reaction
Putilova,Kryshtal',Zhdankina,Troitskii,Zlotin
, p. 512 - 516 (2005)
Tri- and tetraalkylammonium, 1,3-dialkylimidazolium, and 1,2,3-trialkylimidazolium salts with BF 4 - , PF 6 - , AlCl 4 - , and Al 2Cl 7 - as counterions catalyze the Biginelli reaction, ensuring preparation of various 3,4-dihydropyrimidin-2(1H)-one and 3,4-dihydropyrimidine-2(1H)-thione derivatives in high yields in the absence of a solvent.
Melamine trisulfonic acid: A new, efficient and recyclable catalyst for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones in the absence of solvent
Shirini, Farhad,Zolfigol, Mohammad Ali,Albadi, Jalal
, p. 318 - 321 (2011)
Melamine trisulfonic acid (MTSA) can be used as an efficient and recyclable catalyst for the promotion of the synthesis of 3,4-dihydropyrimidin-2(1H)-ones/ thiones (DHPMs) in the absence of solvent. All reactions were performed at 80 °C in good to high yi
The new life of traditional water treatment flocculant polyaluminum chloride (PAC): A green and efficient micro-nano reactor catalyst in alcohol solvents
Bi, Shuxian,Hao, Pengcheng,Li, Xiang,Liang, Yanping,Liang, Yuwang,Liu, Wanyi,Wang, Gang,Wen, Jiantong,Zhan, Haijuan
, p. 655 - 663 (2022/01/22)
Polyaluminum chloride (PAC) is an inorganic polymer material that has the advantages of a simple preparation process and special electronic structure. It is considered to be the most efficient and widely used flocculation material for water treatment. In
