Results 101 to 110 of about 1,000 (202)

Synthesis And Bioactivity of Dihydropyrimidinone (DHPM) Derivatives

open access: yesEuropean Chemical Bulletin
Dihydropyrimidinones (DHPMs) is an main type of heterocyclic compounds whih shows biological activities. This review/article focuses on the synthetic strategies employed for the construction of DHPM frameworks and highlights their bioactivity profiles across various pharmacological targets.
Ganesh L. Kirdat   +3 more
openaire   +3 more sources

Exploring Mn+/silicalite-1 as a catalyst for Biginelli reaction to produce dihydropyrimidinone derivatives [PDF]

open access: yes
A series of Mn+/silicalite-1 was prepared to be used as a Lewis acid heterogeneous catalyst for a one-pot multicomponent Biginelli reaction. The catalysts were characterized by FTIR, XRD, NH3-TPD, and BET. The mesoporous catalysts possess a pore diameter
Abdulloh, Abdulloh   +7 more
core   +1 more source

Multicomponent Reactions for the Preparation of Fluorous Taged Pyrimidines and Thiopyrimidines and their Derivatisation to Obtain Biaryl-Substituted Heterocycles [PDF]

open access: yes, 2011
This thesis presents a work in the field of multicomponent reactions (MCRs), one-step condensation between a fluorous tagged aldehyde, β-keto ester and urea derivatives. This process in literature is known as Biginelli Reaction .
Piqani, Bruno
core   +1 more source

Nanostructure Polyaniline (PANI) Decorated TiO2 Nanocomposite as Efficient Heterogeneous Catalyst [PDF]

open access: yes
The paper describes the synthesis of conducting polyaniline-TiO2 (PANI-TiO2) nanocomposite by chemical oxidative polymerization method using aniline as a monomer. TiO2 nanoparticles were synthesized by sol gel method using TiCl4 and ethanol.
Chabukswar, Vasant V.   +6 more
core   +1 more source

Etude phytochimique d'une plante médicinale [PDF]

open access: yes, 2017
41f.: ill. en coul.;30 cm + (CD-Rom )L'étude de l'espèce Malvasylvestris L a porté sur un screening phytochimique visant à identifier les différentes familles de composés chimiques contenus dans la partie aérienne, Trois extraits ont été préparés à ...
Berkaine, Lamia, Moussaoui, Safia
core   +1 more source

Synthesis of Some Bigienelli Compounds from Thiosemicarbazide use ZnCl2 as Catalyst under Solvent Free Condition [PDF]

open access: yes, 2015
Synthesis of some 1-amino-5-acetyl-6-methyl-4-aryl-3,4-dihydropyrimidine-2-thione and 1-amino arylmethylidiene-5-acetyl-6- methyl-4-aryl-3,4-dihydropyrimidine-2-thione from reaction of acetyl acetone, thiosemicarbazide ...
Barakat, Izeldin E.   +2 more
core   +1 more source

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

open access: yesChemistry 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   +6 more
doaj   +1 more source

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