Results 61 to 70 of about 971 (170)

Isoniazid‐Dihydropyrimidinone Molecular Hybrids: Design, Synthesis, Antitubercular Activity, and Cytotoxicity Investigations with Computational Validation

ChemMedChem, Volume 20, Issue 11, June 2, 2025.
Antitubercular evaluation of a novel library of isoniazid‐dihydropyrimidinone molecular hybrids (8a–8n) discloses a potent compound with MIC = 0.39μg mL−1 against M. tuberculosis mc26230. Cytotoxicity, stability, and in silico studies, including molecular docking and ADME/T (absorption, distribution, metabolism, excretion, and toxicity) analysis ...
Gobind Kumar, Pule Seboletswe, Sahil Mishra, Neha Manhas, Safiyah Ghumran, Nagaraju Kerru, Françoise Roquet‐Banères, Maëlle Foubert, Laurent Kremer, Gaurav Bhargava, Parvesh Singh   +10 more
wiley   +1 more source

Catalysis With Deep Eutectic Solvents: Challenges and Opportunities

ChemCatChem, Volume 17, Issue 11, June 6, 2025.
Deep eutectic solvents (DESs) are emerging as sustainable alternatives in catalysis, offering tunable properties for diverse chemical transformations. This review explores the dual role of DESs as solvents and catalysts, highlighting advancements in organic chemistry, materials science, CO2 fixation, biomass valorization, polymer degradation, and ...
Eduardo Guzmán
wiley   +1 more source

Multicomponent Biginelli's synthesis of 3,4-dihydropyrimidin-2(1H)-ones promoted by SnCl2.2H2O

Journal of the Brazilian Chemical Society, 2004
The ability of SnCl2.2H2O as catalyst to promote the Biginelli three-component condensation reaction from a diversity of aromatic aldehydes, ethyl acetoacetate and urea or thiourea is described.
Russowsky Dennis, Lopes Fabrício A., Silva Victor S. S. da, Canto Karen F. S., D'Oca Marcelo G. Montes, Godoi Marla N.   +5 more
doaj  

Highly Efficient Synthesis of Substituted 3,4-Dihydropyrimidin-2-(1H)-ones (DHPMs) Catalyzed by Hf(OTf)₄: Mechanistic Insights into Reaction Pathways under Metal Lewis Acid Catalysis and Solvent-Free Conditions

Molecules, 2019
In our studies on the catalytic activity of Group IVB transition metal Lewis acids, Hf(OTf)4 was identified as a highly potent catalyst for „one-pot, three-component„ Biginelli reaction.
Rui Kong, Shuai-Bo Han, Jing-Ying Wei, Xiao-Chong Peng, Zhen-Biao Xie, Shan-Shan Gong, Qi Sun   +6 more
doaj   +1 more source

Dihydropyrimidinone Based Chromones as New α‐Glucosidase Inhibitors

ChemistrySelect, Volume 10, Issue 21, June 4, 2025.
1‐(2,4‐Dihydroxyphenyl)ethanone functions as a fundamental precursor in the synthesis of dihydropyrimidinone conjugates that incorporate both chromone and triazole moieties. Docking analyses are performed on 15 synthetic compounds. In silico investigations confirm high binding affinity, with docking energies of −10.7 kcal/mol for compound 5a and −10.9 ...
Kumara Swamy Taviti, T. B. Patrudu, Vishnuvardhana Kishore Polisetti, Venkatesh Bhumireddy Chinnachennaiahgari, Satyanarayana Yatam, Naresh Kumar Katari, Rambabu Gundla   +6 more
wiley   +1 more source

Sustainable Biginelli chemistry: Indian contributions to green multicomponent synthesis

Discover Chemistry
The Biginelli Reaction is a one-pot acid-catalysed cyclo-condensation procedure that combines urea, β-ketoester, and aromatic aldehydes to create functionalised DHPMs. For more than a century, this three-component reaction has been recognised as a method
Rajni, Sahil, Neera Raghav, Anjaneyulu Bendi, G. B. Dharma Rao   +4 more
doaj   +1 more source

Synthesis of bioactive heterocycles using reusable heterogeneous catalyst HClO4–SiO2 under solvent-free conditions

Green Chemistry Letters and Reviews, 2018
We are reporting a simple, efficient and green protocol for the synthesis of chromenes and dihydropyrimidines (products of Knoevenagel and Biginelli reaction, respectively) by the use of silica-supported perchloric acid (HClO4–SiO2) as an effective ...
Leimajam Vartima Chanu, Thokchom Prasanta Singh, Laishram Ronibala Devi, Okram Mukherjee Singh   +3 more
doaj   +1 more source

Solvent free one pot synthesis of novel naphtho[1,8-gh] quinazoline-7,10-dione derivatives with CuCl2

Bulletin of the Chemical Society of Ethiopia, 2018
The Biginelli-type reaction of phenalen-1,3-dione with urea, and benzaldehyde derivatives in the presence of CuCl2 as a catalyst for the synthesis of naphtho[1,8-gh]quinazoline-7,10-diones in solvent free condition are reviewed.
M. K. Mohammadi
doaj   +1 more source

Methyl 6-Methyl-1-(4-methylphenyl)-2-oxo-4-phenyl-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Molbank, 2012
Methyl 6-methyl-1-(4-methylphenyl)-2-oxo-4-phenyl-1,2,3,4-tetrahydro-pyrimidine-5-carboxylate has been synthesized via the modified Biginelli reaction from benzaldehyde, p-tolylurea, and methyl acetoacetate, promoted with microwave irradiation and ...
Haiping Wang, Qing Chen, Qingjian Liu
doaj   +1 more source

Green and Efficient Synthesis of Dihydropyrimidinone Analogues via Hpa-Clay Catalyzed Biginelli Reaction

Chemistry Journal of Moldova: General, Industrial and Ecological Chemistry
This study introduces an environmentally sustainable approach for the synthesis of 3,4-dihydropyrimidin-2(1H)-ones (DHPMs), via the Biginelli reaction. A heterogeneous catalyst, Heteropolyacid-Clay (HPA-Clay), is developed by immobilizing H5PV2W10O40 on ...
Nuzhat Rehman, Ayaz Mahmood Dar, Raja Feroz Ahmad Haji, Sharief-ud-din Khan, Deepak Pareek, Saleem Farooq, Bashir Ahmad Dar   +6 more
doaj   +1 more source