Results 51 to 60 of about 4,540 (259)

Biocatalysis as Useful Tool in Asymmetric Synthesis: An Assessment of Recently Granted Patents (2014–2019) [PDF]

, 2019
The broad interdisciplinary nature of biocatalysis fosters innovation, as different technical fields are interconnected and synergized. A way to depict that innovation is by conducting a survey on patent activities.
Alcántara, Andrés R., Domínguez de María, Pablo, Gonzalo Calvo, Gonzalo de   +2 more
core   +3 more sources

Synthesis of some new derivatives of thiazolopyrimidines and hydrolysis of its arylidene derivative [PDF]

, 2015
A new ammonium acetate-assisted, convenient and efficient procedure for the synthesis of arylidene derivatives of thiazolopyrimidine is described. The main advantages of this protocol is that it is economical, short reaction time, commonly available ...
Imtiyaz Ahmed, M. K., Nagarajaiah, H., Noor Shahina Begum, .   +2 more
core   +3 more sources

Synthesis of pyrimidines, aromatic and heteroaromatic acids as Biginelli reaction catalysts [PDF]

, 2015
Aromatic as well as heteroaromatic acids were found to beexcellent catalysts for the Biginelli three component synthesisof dihydropyrimidinones. Benzoic acid, substituted benzoic acids, five- and six- membered heterocyclic acids can be used for this ...
Adnan, Muhammad, Ain Khan, Misbahul, Ain, Quratul, Amina, Humaira, Kanwal, Fareeha, Lin, Whei-Oh, Naeem Khan, Muhammad, Nazeer, Areesha, Perveen, Saima, Uzzaman, Ashar   +9 more
core  

Synthesis and Crystal Structure Analysis of Ethyl-4-(4-Acetoxy-Phenyl)-3-Acetyl-6-Methyl-2-Thioxo-1,2,3,4-Tetrahydro-Pyrimidine-5-Carboxylate [PDF]

, 2012
4-(4-Acetoxy-phenyl)-3-acetyl-6-methyl-2-thioxo-1,2,3,4-tetrahydro-pyrimidine-5-carboxylic acid ethyl ester (2) was synthesized by a two step reaction process. Preliminary spectroscopic analysis was done by IR, 1HNMR and elemental analysis.
Honnappa Nagarajaiah, ., Noor Shahina Begum, .   +1 more
core   +1 more source

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

Síntese do monastrol e novos compostos de Biginelli promovida por In(OTf)3 Synthesis of monastrol and of new Biginelli compounds promoted by In(OTf)3

Química Nova, 2005
In this paper, we describe a practical route for the synthesis of Biginelli compounds using In(OTf)3. To study the generality of this catalyst, several examples using aromatic aldehydes, 1,3-dicarbonyl compounds, urea, and thiourea were investigated. The
Marla N. Godoi, Hellen S. Costenaro, Eliane Kramer, Paola S. Machado, Marcelo G. Montes D'Oca, Dennis Russowsky   +5 more
doaj   +1 more source

Síntesis de hidrotalcitas calcinadas Cu/Al y su evaluación catalítica en la obtención de Triazol- Dihidropirimidinonas (T-DHPM) [PDF]

, 2017
85 páginas. Maestría en Ciencias e Ingeniería de Materiales.Se sintetizaron materiales tipo hidrotalcita de cobre y aluminio con relaciones molares Cu:Al 1:1 y 3:1, las hidrotalcitas fueron sometidas a tratamiento térmico para obtener la hidrotalcita ...
LOPEZ ALVAREZ, ITZEL GUADALUPE
core  

Investigation of efficient synthesis of 1, 8-dioxo-octahydroxanthene derivatives under solvent-free grinding method [PDF]

, 2013
In these studies, we had observed polyaniline (PANI) supported p-toluene sulfonic acid (TsOH) and FeCl3 (PANI- TsOH, PANI-FeCl3) as excellent reusable solid acid catalysts for the synthesis of 1, 8-dioxo-octahydroxanthene derivatives 4(a-g) under solvent-
P. Dutta, P. Sarma, R. Borah
core   +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

DIFFERENT ROUTES FOR THE SYNTHESIS OF BENZALDEHYDE-BASED DIHYDROPYIMIDINONES VIA BIGINELLI REACTION

Jurnal Kimia Riset, 2023
Multicomponent reactions involving three or more reactants are commonly used to prepare dihydropyrimidinone with various bioactivities. This study reports the different routes for the synthesis of benzaldehyde-based dihydropyrimidinone via the Biginelli ...
Yan Alamanda Ilfahmi, Arif Fadlan
doaj   +1 more source