Results 21 to 30 of about 971 (170)

Synthesis, Characterization, and DFT Calculation of some New Pyrimidine Derivatives and Theoretical Studies on the Corrosion Inhibition Performance [PDF]

Iranian Journal of Chemistry & Chemical Engineering, 2022
In this study, 5-benzoyl-6-phenyl-4- (4- (trifluoromethoxy) phenyl) - 1,2,3,4-tetrahydroxypyrimidine (1); 5-benzoyl-6-phenyl-4- (4- (trifluoromethoxy) phenyl) -1,2,3,4-tetrahydrothioxypyrimidine (2) and 5-benzoyl-6-phenyl-4- (3,5-dimethoxy) phenyl) -1,2 ...
Esvet Akbas, Adem Ruzgar, Akbas Cagla, Sahin Ertan   +3 more
doaj   +1 more source

Multigram-Scale Organic Synthesis by Resonant Acoustic Mixing: Application to the Sustainable Preparation of Active Pharmaceutical Ingredients. [PDF]

ChemSusChem
Knoevenagel condensation, Biginelli three‐component reaction and benzylic rearrangement are investigated at multi‐gram scale, by resonance acoustic mixing (RAM), to prepare biologically active molecules, also including the marketed Phenytoin (antiepileptic drug). Chem21 and DOZN 3.0 tools were used to assess the greenness of the RAM‐assisted syntheses,
Chatzigiannis CM, Scalzullo SM, Colacino E, Rivas ME.   +3 more
europepmc   +2 more sources

An Efficient Synthesis of 3,4-Dihydropyrimidin-2(1H)-Ones and Thiones Catalyzed by a Novel Brønsted Acidic Ionic Liquid under Solvent-Free Conditions

Molecules, 2015
We report here an efficient and green method for Biginelli condensation reaction of aldehydes, β-ketoesters and urea or thiourea catalyzed by Brønsted acidic ionic liquid [Btto][p-TSA] under solvent-free conditions.
Yonghong Zhang, Bin Wang, Xiaomei Zhang, Jianbin Huang, Chenjiang Liu   +4 more
doaj   +1 more source

A Five-Component Biginelli-Diels-Alder Cascade Reaction

Frontiers in Chemistry, 2018
A new multi-component condensation was discovered during the reaction of a urea, β-keto ester, and formaldehyde. In the presence of catalytic indium bromide, a Biginelli dihydropyrimidinone intermediate was further converted to a five-component ...
Taber S. Maskrey, Madeline C. Frischling, Mikhaila L. Rice, Peter Wipf   +3 more
doaj   +1 more source

Clean 3,4-Dihydropyrimidones Synthesis via Biginelli Reaction over Supported Molybdenum: Structural and Textural Characteristic of αMoO3

Bulletin of Chemical Reaction Engineering & Catalysis, 2020
A one-pot three-component synthesis of dihydropyrimidinones (DHPMs) via Biginelli reaction was carried out at 100 °C using benzaldehyde, ethyl acetoacetate and urea as reactants, in the presence of ethanol and free solvent, in heterogeneous catalytic ...
Ouzna Kheffache, Cristina Lopez-Olmos, Inmaculada Rodriguez-Ramos, Ouiza Cherifi   +3 more
doaj   +1 more source

New Anticancer 4-Aryldihydropyrimidinone-5-Carboxylates Targeting Hsp90. [PDF]

Chem Biol Drug Des
We report the computational design and early structure–activity relationship optimisation (SAR) studies on new anticancer 4‐aryldihydropyrimidinone‐5‐carboxylate derivatives as inhibitors of heat shock protein 90. Analogue 5d emerged as a useful hit compound, combining inhibition of colony formation in breast cancer cell lines with effective Hsp90 ...
Bordoni C, Elstow TZ, Brancale A, Clarkson RWE, Westwell AD.   +4 more
europepmc   +2 more sources

Ethyl 4-(2-fluorophenyl)-6-methyl-2-thioxo-1-(p-tolyl)-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Molbank, 2018
The Biginelli reaction is a highly versatile reaction that leads to dihydropyrimidinones/thiones. This scaffold is reported as being a privileged structure due to its ability to interact with biological targets.
Itamar Luís Gonçalves, Luciano Porto Kagami, Gustavo Machado das Neves, Liliana Rockenbach, Leonardo Davi, Alceu Felipe Soares, Solange Cristina Garcia, Vera Lucia Eifler-Lima   +7 more
doaj   +1 more source

Lithium-Acetate-Mediated Biginelli One-Pot Multicomponent Synthesis under Solvent-Free Conditions and Cytotoxic Activity against the Human Lung Cancer Cell Line A549 and Breast Cancer Cell Line MCF7

The Scientific World Journal, 2012
Various Biginelli compounds (dihydropyrimidinones) have been synthesized efficiently and in high yields under mild, solvent-free, and eco-friendly conditions in a one-pot reaction of 1,3-dicarbonyl compounds, aldehydes, and urea/thiourea/acetyl thiourea ...
Harshita Sachdeva, Diksha Dwivedi
doaj   +1 more source

A mini-review on Biginelli adducts with notable pharmacological properties

Journal of Advanced Research, 2015
Since the disclosure of Biginelli reaction by the chemist Pietro Biginelli, functionalized 3,4-dihydropyrimidin-2(1H)-ones/thiones (DHPMs) have emerged as prototypes for the design of compounds with a broad variety of biological activities.
Ângelo de Fátima, Taniris C. Braga, Leonardo da S. Neto, Bruna S. Terra, Breno G.F. Oliveira, Daniel L. da Silva, Luzia V. Modolo   +6 more
doaj   +1 more source

Modification of Starch via the Biginelli Multicomponent Reaction [PDF]

Macromolecular Rapid Communications, 2019
AbstractAn efficient and straightforward modification of starch using renewable and commercially available aromatic aldehydes (benzaldehyde, vanillin, and p‐anisaldehyde) and urea via the Biginelli multicomponent reaction is reported in this work. First, starch acetoacetate (SAA) with a degree of substitution ranging from 1.4 to 2.5, depending on the ...
Eren Esen, Michael A. R. Meier
openaire   +4 more sources