Results 61 to 70 of about 2,041,750 (198)

Nitrogen‐Rich, Tröger's Base‐Linked Porous Organic Polymers (POPs) as Heterogeneous Catalysts and Adsorbents of Organic Pollutants From Water

Journal of Applied Polymer Science, Volume 143, Issue 3, January 15, 2026.
Synthesized Tröger's based POPs showed great versatility in heterogeneous catalysis reactions and for pollutant adsorption. ABSTRACT Porous organic polymers are a new class of polymeric materials that combine permanent porosity, high surface area, monomer diversity, and synthetic tunability, making them highly promising candidates for application in ...
Tiago F. Machado, Saúl Vallejos, Artur J. M. Valente, M. Elisa Silva Serra, Dina Murtinho   +4 more
wiley   +1 more source

MICROWAVE IRRADIATED GREEN BIGINELLI REACTION†EMPLOYING APPLE, POMEGRANATE AND GRAPE JUICE AS ECO-FRIENDLY REACTION MEDIUM [PDF]

, 2016
Objective: The main objective of this work is to explore the utility of apple, pomegranate and grape juice as an eco-friendly reaction medium for microwave assisted green Biginelli reaction.Methods: A series of Biginelli reactions were carried out in ...
Padan, Simarjit Kaur, Pramanik, Tanay
core   +1 more source

H2SO4-Silica Catalyzed One-Pot and Efficient Synthesis of Dihydropyrimidinones Under Solvent-Free Conditions

E-Journal of Chemistry, 2011
H2SO4-Silica efficiently catalyzes the three-component condensation reaction of aldehydes, 1,3-dicarbonyl compounds and urea/thiourea under solvent free conditions to afford the corresponding dihydropyrimidinones and thio-derivatives in high yields ...
Seied Ali Pourmousavi, Maryam Hasani
doaj   +1 more source

One‐Pot Morita–Baylis–Hillman/Allylic Substitution in Deep Eutectic Solvents: Access to γ‐Hydroxy Derivatives via Sequential CC and CX (X = P, N, S, B, Si) Bond Formation

ChemSusChem, Volume 19, Issue 1, January 2026.
Sustainable one‐pot synthesis of functionalized γ‐hydroxy derivatives in deep eutectic solvents. A green, sequential CC/CX bond‐forming strategy enables diverse γ‐hydroxy derivatives via Morita–Baylis–Hillman and nucleophilic functionalization in ChCl/Gly deep eutectic solvent.
Marina Ramos‐Martín, Ignacio del Río, Joaquín García‐Álvarez, Alejandro Presa Soto   +3 more
wiley   +1 more source

Ethyl 4-[5-(methoxymethyl)furan-2-yl]-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate

Molbank, 2017
A one-pot multicomponent reaction has been used to synthesize the title compound, ethyl 4-[5-(methoxymethyl)furan-2-yl]-6-methyl-2-oxo-1,2,3,4-tetrahydropyrimidine-5-carboxylate by PTSA catalyzed Biginelli reaction.
Hery Suwito, Salma Zulqaida, Kautsar Ul Haq, Alfinda Novi Kristanti, Indriani Indriani   +4 more
doaj   +1 more source

An Improved Protocol for Biginelli Reaction

Green and Sustainable Chemistry, 2013
[Hmim][Tfa] was used as catalyst for the Biginelli reaction under microwave heating. Low catalyst loading, reduced reaction time and operational simplicity are the main highlights of this protocol. The proposed protocol was found active in the synthesis of 30 different biologically active compounds.
openaire   +2 more sources

Design, Structural Characterization, and Fluorescence Behavior of a New Centrosymmetric Dinuclear Cd(II) Complex With 2‐Formylphenoxyacetic Acid and 1,10‐Phenanthroline

Journal of Spectroscopy, Volume 2026, Issue 1, 2026.
A new centrosymmetric dinuclear Cd(II) complex, [Cd2(L)4(Phen)2] (1) (HL = 2‐formylphenoxyacetic acid; Phen = 1,10‐phenanthroline), was synthesized using Cd(NO3)2·4H2O, 2‐formylphenoxyacetic acid, 1,10‐phenanthroline, and NaOH in a CH3CH2OH/H2O mixture (v:v = 3:1).
Tai Xi-Shi, Wang Li-Hua, Saud I. Al-Resayes, Mohammad Azam, Renata Diniz   +4 more
wiley   +1 more source

Synthesis of 3,4-dihydropyrimidines and octahydroquinazolinones by SBA-15 supported schiff-base iron (III) complex as durable and reusable catalyst under ultrasound irradiation

Scientific Reports
Biginelli-type heterocyclic compounds are particularly important due to their several chemical reactivities and various range of pharmacological activity.
Zeynab Balali, Javad Safaei-Ghomi, Elahe Mashhadi   +2 more
doaj   +1 more source

One-Pot Synthesis of 3,4-Dihydropyrimidin-2(1H)-ones Catalyzed by Chlorosulfonic Acid

E-Journal of Chemistry, 2005
An efficient synthesis of 3,4-dihydropyrimidin-2-ones (DHPMs) from the aldehydes, β-ketoesters and urea in ethanol using chlorosulfonic acid as the catalyst is described.
Jin Tong-Shou, Zhao Ying, Liu Li-Bin, Li Tong-Shuang   +3 more
doaj   +1 more source

DES‐Promoted Synthesis of 3,4‐Dihydropyrimidinones and Their Antidiabetic and Antioxidant Evaluation Supported With Computational Studies

Chemistry &Biodiversity, Volume 22, Issue 12, December 2025.
DES‐promoted synthesis and antidiabetic evaluation of 3,4‐dihydropyrimidinones and their complementation with computational studies are reported. ABSTRACT A series of 3,4‐dihydropyrimidinone (DHPM) derivatives was synthesized using a green deep eutectic solvent (DES) system composed of ZnCl2 and urea, which acted simultaneously as solvent, catalyst ...
Gobind Kumar, Sahil Mishra, Pule Seboletswe, Nontobeko Gcabashe, Lalitha Gummidi, Neha Manhas, Talent Makhanya, Gaurav Bhargava, Almahi Idris, Md. Shahidul Islam, Parvesh Singh   +10 more
wiley   +1 more source