Results 81 to 90 of about 4,540 (259)

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

A versatile and an efficient synthesis of 5-​substituted-​1H-​tetrazoles [PDF]

, 2011
A simple, efficient and a versatile method for the synthesis of 5-​substituted-​1H-​tetrazoles by a [3+2]​-​cycloaddn. reaction of aryl nitriles with sodium azide in DMF using ZrOCl2·8 H2O as catalyst has been developed. The reactions work well at 100°C
Gowd Madhusudana Reddy Muthukur Bhoje, ., Pasha Mohamed Afzal, .   +1 more
core   +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

Ferrocén-szubsztituált heterociklusok és származékaik szintézise, szerkezetigazolása és komplex spektroszkópiai vizsgálata = Synthesis, structure determination and complex spectroscopic study of ferrocene-substituted heterocycles and their derivatives [PDF]

, 2007
Új, mono- és poliheterociklusokkal egyszeresen és többszörösen szubsztituált ferrocénszármazékokat állítottunk elő. Szerkezetüket komplex nagyműszeres vizsgálatokkal (IR, MS, röntgendiffrakció, multinukleáris NMR) derítettük fel.
Csámpai, Antal, Perjési, Pál, Sohár, Pál, Túrós, György István, Zsoldosné dr. Mády, Virág   +4 more
core  

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

A Green and Efficient Method for the Preparation of 3,4-Dihydropyrimidin-2(1H)-ones Using Quaternary Ammonium-Treated Clay in Water

Journal of Chemistry, 2013
A variety of 3,4-dihydropyrimidin-2(1H)-ones derivatives were synthesized via three-component Biginelli reaction. The quaternary ammonium-treated clay-catalyzed process proved to be simple, efficient, and environmentally friendly.
Soheil Sayyahi, Sedigheh Jahanbakhshi, Zahra Dehghani   +2 more
doaj   +1 more source

Recent Advances in Biocatalytic Promiscuity: Hydrolase-Catalyzed Reactions for Nonconventional Transformations [PDF]

, 2015
Financial support from the Spanish Ministerio de Economía y Competitividad (CTQ2013-44153-P) is grateful acknowledged. M.L.-I.
Gotor Fernández, Vicente, López Iglesias, María   +1 more
core   +2 more sources

Design, Synthesis, Photophysical, Theoretical, and Electrochemical Characterization of Novel Organochalcogen‐DHPM‐Triazole Hybrids

ChemistrySelect, Volume 10, Issue 22, June 11, 2025.
A library of novel organochalcogen‐DHPM‐triazole hybrids was developed using a rapid, simple, and ultrasound‐assisted method. Additionally, all compounds underwent comprehensive theoretical, photophysical, and electrochemical characterization, providing relevant insights for future biological applications.
Amanda R. Azevedo, Patrick C. Nobre, Mateus H. Köhler, Bernardo A. Iglesias, Vanessa Nascimento   +4 more
wiley   +1 more source

Cinchona-Derived Picolinamides: Effective Organocatalysts for Stereoselective Imine Hydrosilylation [PDF]

, 2014
Picolinamide-cinchona organocatalysts for the successful enantioselective reduction of ketomines were developed. For the first time, a new type of chiral Lewis base, a cationic species, is reported to efficiently organocatalyze the addition of ...
Andrea, Genoni, Barrulas, Pedro, Benaglia, Maurizio, Burke, Anthony   +3 more
core   +1 more source

Bi-SO3H Functionalized Ionic Liquid Based on DABCO: New and Efficient Catalyst for Facile Synthesis of Dihydropyrimidinones

Journal of Chemistry, 2013
A simple and efficient method for the one-pot Biginelli condensation reaction of aldehydes, β-dicarbonyl compounds, and urea or thiourea employing [DABCO](SO3H)2Cl2 as a novel ionic liquid catalyst is described.
Firouzeh Nemati, Sara G. Alizadeh
doaj   +1 more source