5948-72-1Relevant academic research and scientific papers
Microwave-assisted efficient synthesis of dihydropyrimidines in solvent-free condition
Mirza-Aghayan, Maryam,Bolourtchian, Mohammad,Hosseini, Maryam
, p. 3335 - 3341 (2004)
An efficient synthesis of 3,4-dihydropyrimidinones from an aldehyde, a ketoester, and a urea or thiourea using a catalytic amount of ferric chloride hexahydrate is described. Microwave irradiation has been used to accelerate the synthesis of the Biginelli
Magnetic Silica-Coated Picolylamine Copper Complex [Fe3O4@SiO2@GP/Picolylamine-Cu(II)]-Catalyzed Biginelli Annulation Reaction
Rezayati, Sobhan,Kalantari, Fatemeh,Ramazani, Ali,Sajjadifar, Sami,Aghahosseini, Hamideh,Rezaei, Aram
, p. 992 - 1010 (2022/01/11)
An efficient and heterogeneous novel magnetic silica-coated picolylaminecopper complex [Fe3O4@SiO2@GP/Picolylamine-Cu(II)] was synthesized, characterized, and employed as a magnetically recoverable nanocatalyst in Biginelli condensation for the preparatio
Titanium tetrachloride immobilized on cross-linked poly(N-vinyl-2-pyrrolidone) as a recyclable heterogeneous catalyst for one-pot three component synthesis of 3, 4-dihydropyrimidin-2(1H)-ones/thiones
Donyapeyma, Ghazaleh,Rahmatpour, Ali
supporting information, (2022/03/27)
A new catalytic application of titanium tetrachloride immobilized on the cross-linked poly(N-vinyl-2-pyrrolidone) carrier as beads, TiCl4/PNVP, as a recoverable and heterogeneous macromolecular Lewis acidic catalyst is developed. This catalytic system allowed for the facile and cleaner synthesis of 3,4-dihydro pyrimidin-2(1H)-ones/thiones in high yields with TON up to 23.2 through the Biginelli three-component cyclocondensation reaction in ethanol. The reusability test ascertained that this heterogeneous titanium catalyst can be easily separated from the reaction mixture by simple filtration and reused several times with no great decline of activity.
Poly(N-vinyl-2-pyrrolidone)-supported ferric chloride: An effective reusable heterogeneous catalyst for one-pot synthesis of 3,4-dihydropyrimidin-2(1H)-ones/thiones via three-component Biginelli reaction
Donyapeyma, Ghazaleh,Rahmatpour, Ali
, (2022/01/19)
An environmentally benign three-component Biginelli protocol for the one-pot synthesis of substituted 3,4-dihydropyrimidin-2(1H)-ones/thiones using an accessible, nontoxic, easy to handle, and recoverable macromolecular Lewis acidic catalyst is developed.
Deep eutectic solvent assisted synthesis of dihydropyrimidinones/thionesviaBiginelli reaction: theoretical investigations on their electronic and global reactivity descriptors
Shaibuna,Kuniyil, Muhammed Jeneesh Kariyottu,Sreekumar
, p. 20765 - 20775 (2021/11/23)
Deep eutectic solvents formed from hydrated metal chlorides and hydrogen bond donors (Type 4) were prepared and their catalytic activity was compared for the synthesis of dihydropyrimidinones/thionesviaBiginelli reaction at room temperature. The one-pot m
3,4-Dihydropyrimidin-2(1 H)-ones as Antagonists of the Human A2BAdenosine Receptor: Optimization, Structure-Activity Relationship Studies, and Enantiospecific Recognition
Majellaro, María,Jespers, Willem,Crespo, Abel,Nú?ez, María J.,Novio, Silvia,Azuaje, Jhonny,Prieto-Díaz, Rubén,Gioé, Claudia,Alispahic, Belma,Brea, José,Loza, María I.,Freire-Garabal, Manuel,Garcia-Santiago, Carlota,Rodríguez-García, Carlos,García-Mera, Xerardo,Caama?o, Olga,Fernandez-Masaguer, Christian,Sardina, Javier F.,Stefanachi, Angela,El Maatougui, Abdelaziz,Mallo-Abreu, Ana,?qvist, Johan,Gutiérrez-De-Terán, Hugo,Sotelo, Eddy
supporting information, p. 458 - 480 (2021/01/13)
We present and thoroughly characterize a large collection of 3,4-dihydropyrimidin-2(1H)-ones as A2BAR antagonists, an emerging strategy in cancer (immuno) therapy. Most compounds selectively bind A2BAR, with a number of potent and selective antagonists fu
Tungsten-substituted molybdophosphoric acid impregnated with kaolin: effective catalysts for the synthesis of 3,4-dihydropyrimidin-2(1: H)-ones v i a biginelli reaction
Aher, Dipak S.,Khillare, Kiran R.,Chavan, Laxmikant D.,Shankarwar, Sunil G.
, p. 2783 - 2792 (2021/01/28)
A series of highly reusable heterogeneous catalysts (10-25 wt% PMo7W5/kaolin), consisting of tungsten-substituted molybdophosphoric acid, H3PMo7W5O40·24H2O (PMo7W5) impregnated with acid treated kaolin clay was synthesized by the wetness impregnation meth
Application of design of experiments (Doe) approach for the optimization of phase-transfer catalyzed biginelli dihydropyrimidinone (dhpm) synthesis
Durai Ananda Kumar, T.,Satyanarayana, K.,Subrahmanyam, C. V. S.,Swathi, N.
, p. 520 - 531 (2021/07/25)
The conventional Biginelli synthesis is more cumbersome and produces lower yields. Several improved methods are reported in the literature to replace the Biginelli catalyst. The design of biocompatible organic transformation is a major concern and a versa
1, 1'-sulfinyldiethylammonium bis (hydrogen sulfate) as a recyclable dicationic ionic liquid catalyst for the efficient solvent-free synthesis of 3, 4-dihydropyrimidin-2(1H)-ones Via biginelli reaction
Ehsani-Nasab, Zainab,Ezabadi, Ali
, p. 157 - 167 (2020/04/29)
Objective: A facile and efficient method for synthesis of 3, 4-dihydropyrimidin-2(1H)-ones via Biginelli reaction catalyzed by a novel dicationic Br?nsted acidic ionic liquid, [(EtNH2)2SO][HSO4]2, has been succe
Efficient one-pot synthetic methods for the preparation of 3,4-dihydropyrimidinones and 1,4-dihydropyridine derivatives using BNPs?SiO2(CH2)3NHSO3H as a ligand and metal free acidic heterogeneous nano-catalyst
Bahrami, Kiumars,Khodamorady, Minoo,Sohrabnezhad, Samira
, (2020/01/23)
Heterocyclic compounds with biological and pharmacological activates like 3,4-dihydropyrimidin-2-(1H)-ones and 1,4-dihydropyridines have attracted great interest. Boehmite nanoparticles functionalized with silylpropyl sulfamic acid (BNPs?SiO2(C
