Results 101 to 110 of about 20,092 (323)

Poly (4-vinylpyridine) and polyaniline: As efficient and commercial available basic catalysts for the synthesis of N-amino-2-pyridones under thermal conditions or microwave irradiation [PDF]

, 2014
Poly (4-vinylpyridine) and polyaniline as highly effective base catalysts have catalyzed the three-component reaction of an appropriate aldehyde, cyanoacetic acid hydrazide and malononitrile to prepare of the corresponding N-amino-2-pyridone derivatives.
Amrollahi, Mohammad Ali, Mokhtari, Tayebeh Sattaei, Sheibani, Hassan, Sheikhhosseini, Enayatollah   +3 more
core   +1 more source

Advances in Ligand‐Driven Pd‐Catalyzed C─H Functionalizations: Recent Insights and Updates

ChemCatChem, Volume 17, Issue 15, August 7, 2025.
The most significant advances in ligand‐driven Pd‐catalyzed organic synthesis over the past two years are presented. Processes involving C─H activation of substrates, avoiding their prefunctionalization are illustrated. Both the activity and selectivity of the catalyst depend on the design of the ligands (pyridones, pyridines, amino acids, phosphines ...
Jesús Moradell, Cosmina Bohan, Alexandra Pop, Esteban P. Urriolabeitia   +3 more
wiley   +1 more source

3,4-and 3,5-disubstituted 2-pyridones using an intermolecular cycloaddition/cycloreversion strategy: toward the synthesis of aristopyridinone A [PDF]

, 2015
The intermolecular cycloaddition of pyrazinone precursors with alkyne substrates was evaluated. The resulting regioisomeric [2.2.2]-diketopiperazine alkene cycloadducts were diverted into 2-pyridone products through cycloreversion of the [2.2.2]-bicyclic
Leibowitz, Maren K., Scheerer, Jonathan R., Winter, Ethan S.   +2 more
core   +2 more sources

Carbon Aerogel for Aqueous Phase Adsorption/Absorption: Application Performances, Intrinsic Characteristics, and Regulatory Constructions

Small Structures, Volume 6, Issue 8, August 2025.
Carbon aerogels (CAs) show broad application prospects for aqueous pollutant removal. In this review, CAs’ evaluation indicators, structural compositions, intrinsic characteristics, and construction paths are summarized to clarify the interrelationships among the structures, properties, and applications of CAs.
Yong Zhong, Lei Qin, Xuzhen Wang, Weifeng Liu, Yongzhen Yang, Xuguang Liu   +5 more
wiley   +1 more source

Synthesis, characterization, and antimicrobial evaluation of novel 5-benzoyl-N-substituted amino- and 5-benzoyl-N-sulfonylamino-4-alkylsulfanyl-2-pyridones

Drug Design, Development and Therapy, 2017
Galal Elgemeie,1 Farag Altalbawy,2,3 Mohammed Alfaidi,3 Rania Azab,2,4 Atef Hassan5 1Department of Chemistry, Faculty of Science, Helwan University, Helwan, 2National Institute of Laser Enhanced Sciences (NILES), Cairo University, Giza, Egypt ...
Elgemeie G, Altalbawy F, Alfaidi M, Azab R, Hassan A   +4 more
doaj  

Kristallstruktur eines 2-Dimethylamino-3,3-dimethyl-4(3H)-pyridons

CHIMIA, 1982
3-Dimethylamino-2,2-dimethyl-2H-azirine (1) reacts with alkyl phenyl substituted cyclopropenones 2 in benzene at 130 °C to give a mixture of the two isomeric 4(3H)-pyridones 3 and 4, resulting from a nucleophilic attack at C(2) and C(1) of the ...
Jost H. Bieri, Roland Prewo, Heinz Heimgartner   +2 more
doaj   +1 more source

Regioselective C5-alkylation and C5-methylcarbamate formation of 2,3-dihydro-4-pyridones and C3-alkylation and C3-methylcarbamate formation of 4-(pyrrolidin-1-yl)furan-2(5H)-one [PDF]

, 2017
Reactions of N-alkyl-2,3-dihydro-4-pyridones and 4-(pyrrolidin-1-yl)furan-2(5H)-one with aldehydes and triethylsilane in a one-flask procedure provided C5 and C3 alkylated derivatives, respectively. Mannich-type reactions with formaldehyde and carbamates
Georg, Gunda I., Gu, Xingxian
core   +1 more source

Oral MIB‐626 (β Nicotinamide Mononucleotide) Safely Raises Blood Nicotinamide Adenine Dinucleotide Levels in Hospitalized Patients With COVID‐19 and Acute Kidney Injury: A Randomized Controlled Trial

FASEB BioAdvances, Volume 7, Issue 8, August 2025.
This randomized, placebo‐controlled trial assessed the effects of NAD augmentation by administration of oral β Nicotinamide Mononucleotide (β NMN) 1.0 g twice daily or placebo for 14 days in adult patients hospitalized with COVID‐19 and acute kidney injury on blood NAD, plasma levels of NAD metabolites, biomarkers of acute kidney injury, inflammation ...
Karol M. Pencina, David E. Leaf, Rodrigo J. Valderrabano, Sushrut S. Waikar, Tapan S. Mehta, Yili Valentine Shang, Nancy K. Latham, Tejossy John, Elena Volpi, Dahlene Fusco, Yusnie Memish‐Beleva, Shobana Krishnamurthy, Siva Lavu, Salma Karmi, David J. Livingston, Shalender Bhasin   +15 more
wiley   +1 more source

Electrocyclic Ring‐Opening of 1,2,4‐Oxadiazole[4,5‐a]piridinium Chloride: a New Route to 1,2,4‐Oxadiazole Dienamino Compounds

ChemistryOpen, 2019
1,2,4‐Oxadiazole[4,5‐a]piridinium chloride adds nucleophiles to undergo electrocyclic ring opening affording 1,2,4‐oxadiazole dienamino derivatives. These pyridinium salts represent a special class of Zincke salts that are prone to rearrange when treated
Dr. Stefano Carella, Dr. Misal Giuseppe Memeo, Prof. Paolo Quadrelli   +2 more
doaj   +1 more source

Design, Synthesis and Antifibrotic Activities of Carbohydrate- Modified 1-(Substituted aryl)-5-trifluoromethyl-2(1H) Pyridones

Molecules, 2012
Pirfenidone, a pyridone compound, is an effective and novel antifibrotic agent. In this article, we describe the design, synthesis and activity evaluation of novel antifibrotic agents, 1-(substituted aryl)-5-trifluoromethyl-2(1H) pyridones modified with ...
Lijian Tao, Zhongjun Li, Renna Luo, Gaoyun Hu, Qi Hou, Zhiqi Lao, Lingling Xuan, Jinye Bai, Xiangbao Meng, Qinghua Lou   +9 more
doaj   +1 more source