[PDF][PDF] Synthetic approaches for the synthesis of dihydropyrimidinones/thiones (biginelli adducts): a concise review

VA Adole - World journal of pharmaceutical research, 2020 - researchgate.net
Dihydropyrimidinones are considered as vital biological scaffolds due to their involvement in
various medicinal activities. As a result of the wide utilization of different Biginelli adducts in …

Tuning the Biginelli reaction mechanism by the ionic liquid effect: the combined role of supported heteropolyacid derivatives and acidic strength

EF Freitas, RY Souza, STA Passos, JA Dias… - RSC …, 2019 - pubs.rsc.org
Herein, a combination of heteropolyacids and ionic liquids as a catalytic system was studied
for the Biginelli multicomponent reaction; the positive ionic liquid effect associated with the …

1, 3-Bis (carboxymethyl) imidazolium chloride as a sustainable, recyclable, and metal-free ionic catalyst for the Biginelli multicomponent reaction in neat condition

P Madivalappa Davanagere, B Maiti - ACS omega, 2021 - ACS Publications
A simple and novel methodology has been developed for the synthesis of 1, 3-bis
(carboxymethyl) imidazolium chloride [BCMIM][Cl] salt. The ionic salt [BCMIM][Cl] catalyzed …

Polymer-Supported Dioxidovanadium (V) Complex-Based Heterogeneous Catalyst for Multicomponent Biginelli Reaction Producing Biologically Active 3, 4 …

MR Maurya, A Patter, D Singh, K Ghosh - Catalysts, 2023 - mdpi.com
Dioxidovanadium (V) complex [VVO2 (sal-aebmz)](1)(where Hsal-aebmz= Schiff base
derived from the condensation of salicylaldehyde and 2-aminoethylbenzimidazole) has …

Synthesis of dihydropyrimidinone and dihydropyridine derivatives by a GQDs-based magnetically nanocatalyst under solvent-free conditions

M Najjar, MA Nasseri, M Darroudi… - Journal of Environmental …, 2022 - Elsevier
A novel and heterogeneous catalyst were prepared of magnetic nanoparticles Fe 3 O 4
coated with silicate modified with graphene quantum dot-copper (GQD/Cu) and used as an …

Core-shell assembly of ZrO2 nanoparticles with ionic liquid: a novel and highly efficient heterogeneous catalysts for Biginelli and esterification reactions

D Chakraborty, M Devi, B Das, SS Dhar - Environmental Science and …, 2023 - Springer
Imidazolium sulfonic acid chloride grafted ZrO2 nanoparticles (ZrO2-IL) were synthesized
through facile post-treatment of the nanoparticles with the imidazolium-sulfonic acid chloride …

Trinuclear cis–[MoVIO2] complexes catalyzed efficient synthesis of 3, 4-dihydropyrimidin-2 (1H)-one based biomolecules via one-pot-three-components Biginelli …

MR Maurya, D Singh, R Tomar, P Gupta - Inorganica Chimica Acta, 2022 - Elsevier
The tricompartmental ligands tris (H 2 ONO)[H 6 L 1-3 (I–III)] having C 3 symmetry, obtained
from the condensation of benzene-1, 3, 5-tricarbohydrazide and 3-acetyl-2-hydroxy-6-methyl …

Air‐stable zirconium (IV)‐salophen perfluorooctanesulfonate as a highly efficient and reusable catalyst for the synthesis of 3, 4‐dihydropyrimidin‐2‐(1H)‐ones/thiones …

N Li, Y Wang, F Liu, X Zhao, X Xu… - Applied …, 2020 - Wiley Online Library
An air‐stable complex of zirconium (IV)‐salophen perfluorooctanesulfonate (1) was
successfully synthesized by reacting Zr (salphen) Cl2 and C8F17SO3Ag. Complex 1 was …

Highly Efficient Synthesis of Substituted 3,4-Dihydropyrimidin-2-(1H)-ones (DHPMs) Catalyzed by Hf(OTf)4: Mechanistic Insights into Reaction Pathways under Metal …

R Kong, SB Han, JY Wei, XC Peng, ZB Xie, SS Gong… - Molecules, 2019 - mdpi.com
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 …

Influence of coordination geometry on the ring opening of benzoxazine: Oxidovanadium (V), dioxidomolybdenum (VI) and dioxidotungsten (VI) complexes of …

MR Maurya, N Kumar, SK Maurya… - European Journal of …, 2023 - Wiley Online Library
Mono benzoxazine appended N‐capped amino bis (disubstitutedphenol) ligands [II (a–c)]
upon reaction with VVO (OEt) 3 in a 1: 1 molar ratio in EtOH/MeOH give [{VVO} en (3, 5 …