Results 21 to 30 of about 142,321 (265)

Microwave-Assisted Synthesis, Structural Characterization and Assessment of the Antibacterial Activity of Some New Aminopyridine, Pyrrolidine, Piperidine and Morpholine Acetamides

Molecules, 2021
A series of new acetamide derivatives 22–28 of primary and secondary amines and para-toluene sulphinate sodium salt have been synthesized under microwave irradiation and assessed in vitro for their antibacterial activity against one Gram-positive and two
Abdulmajeed S. H. Alsamarrai, Saba S. Abdulghani   +1 more
doaj   +1 more source

5-[(3,5-Dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione

Molbank, 2010
The title compound, 5-[(3,5-dimethyl-1-phenyl-1H-pyrazol-4-yl)methylene]-1,3-diethyl-2-thioxodihydropyrimidine-4,6(1H,5H)-dione, has been synthesized by condensation of 1,3-diethyl-2-thiobarbituric acid and 3,5-dimethyl-1-phenylpyrazole-4-carbaldehyde in
Salman A. Khan, Abdullah Mohamed Asiri
doaj   +1 more source

Highly optical transparency and thermally stable polyimides containing pyridine and phenyl pendant

Designed Monomers and Polymers, 2017
In order to obtain highly optical transparency polyimides, two novel aromatic diamine monomers containing pyridine and kinky structures, 1,1-bis[4-(5-amino-2-pyridinoxy)phenyl]diphenylmethane (BAPDBP) and 1,1-bis[4-(5-amino-2-pyridinoxy)phenyl]-1 ...
Jianan Yao, Chunbo Wang, Chengshuo Tian, Xiaogang Zhao, Hongwei Zhou, Daming Wang, Chunhai Chen   +6 more
doaj   +1 more source

Crystal structures of N-(pyridin-2-ylmethyl)pyrazine-2-carboxamide (monoclinic polymorph) and N-(pyridin-4-ylmethyl)pyrazine-2-carboxamide

Acta Crystallographica Section E, 2014
The title compounds, C11H10N4O (HL1) and C11H10N4O (HL2), are pyridine 2-ylmethyl and 4-ylmethyl derivatives, respectively, of pyrazine-2-carboxamide. HL1 was measured at 153 K and crystallized in the monoclinic space group P21/c with Z = 4.
Dilovan S. Cati, Helen Stoeckli-Evans
doaj   +1 more source

Substituted pyridines

Chemistry of Heterocyclic Compounds, 1966
A number of amides and hydrazides of 4-phenyl-2,5-pyridine dicarboxylic acids are synthesized. © 1966 The Faraday Press, Inc.
Prostakov N.S., Mikheeva N.N., Phalgumani D., Mathew K.J.   +3 more
openaire   +3 more sources

Poly[[tetramethanolbis[4-oxo-3-(pyridin-4-yl)-1-(2,4,6-trichlorophenyl)-4,5-dihydro-1H-pyrazolo[3,4-d]pyrimidin-6-olato]disodium]–diethyl ether–methanol (1/1/2)]

IUCrData, 2016
In the title compound, [Na2(C16H7Cl3N5O2)2(CH3OH)4]·C4H10O·2CH3OH, the central pyrazolo[3,4-d]pyrimidine system makes dihedral angles of 82.98 (7)° with the trichlorophenyl ring and 13.11 (15)° with the pyridine ring.
Bassam Abu Thaher, Dieter Schollmeyer, Stefan Laufer   +2 more
doaj   +1 more source

Discovery of novel isonipecotic acid-based heteroaryl amino acid derivatives as potential anticonvulsant agents: Design, synthesis, in-silico ADME study, and molecular docking studies

Journal of Pharmacy and Bioallied Sciences, 2023
Background: Epilepsy is a neurological disorder characterized by anomalous brain activity, convulsions, and odd behavior. Several substituted-(naphthalen-2-yl)-3-(1H-indol-3-yl) allyl)-1,4-dihydropyridine-4-carboxylic acid derivatives (5a-j) were ...
Mohammad M Ahmad, Naseem Akhtar, Shamshir Khan, Mohd Rashid, Md Tanwir Athar, Zabih Ullah, Mohamad Taleuzzaman   +6 more
doaj   +1 more source

Degradation of pyridine in coal chemical wastewater using ionizing radiation and synergistic processes

Fushe yanjiu yu fushe gongyi xuebao
This study investigates the degradation of pyridine in coal chemical wastewater using electron beam (EB) irradiation and explores the impacts of absorbed dose, initial pyridine concentration, and pH.
WANG Xinxuan, YANG Qi, ZHANG Zhonglei, CHEN Hai, CHEN Chuanhong, ZHANG Tao   +5 more
doaj   +1 more source

An Efficient Synthesis of a Variety of Substituted Pyridine-3-Thiols

Журнал органічної та фармацевтичної хімії
A practical and convenient method for the synthesis of pyridine-3-thiols using substituted 3-iodopyridines as starting compounds has been developed. Based on the use of thiobenzoic acid as a sulfur donor in a two-step procedure, this approach made it ...
Oleksandr V. Borysov, Dmytro P. Bohdan
doaj   +1 more source

Scope and Limitations of a Novel Synthesis of 3-Arylazonicotinates

Molecules, 2012
The reaction of 3-oxo-3-phenyl-2-phenylhydrazonal with functionally substituted and heteroaromatic substituted acetonitrile to yield arylazonicotinic acid derivatives and 5-arylsubstituted pyridines was established. In some cases the produced nicotinates
Awatef Mohamed El-Maghraby, Maghraby Ali Selim, Omniya Sayed Zaky, Moustafa Sherief Moustafa, Mohamed Hilmy Elnagdi   +4 more
doaj   +1 more source