Results 1 to 10 of about 340,813 (275)

Dichlorido(pyridine-κN)[2,3,5,6-tetrakis(pyridin-2-yl)pyrazine-κ3N2,N1,N6]nickel(II)

open access: yesIUCrData, 2021
In the title complex, [NiCl2(C5H5N)(C24H16N6)], the NiII ion is six-coordinated in a distorted octahedral coordination environment defined by three N atoms of the tridentate 2,3,5,6-tetra-2-pyridylpyrazine ligand, one N atom of the pyridine ligand and ...
Kwang Ha
doaj   +1 more source

N-(Pyridin-2-ylmethyl)pyridin-2-amine [PDF]

open access: yesActa Crystallographica Section E Structure Reports Online, 2011
The title compound, C(11)H(11)N(3), crystallizes with two mol-ecules (A and B) in the asymmetric unit. The geometries of both mol-ecules are very similar, with the exception of the torsion angles of the inter-ring chains; the values for C-N-C-C are 67.4 (5) and -69.3 (5)° for mol-ecules A and B, respectively.
Suk-Hee Moon, Tae Ho Kim, Ki-Min Park
openaire   +3 more sources

Recent advances in the tandem annulation of 1,3-enynes to functionalized pyridine and pyrrole derivatives

open access: yesBeilstein Journal of Organic Chemistry, 2021
Great progress has been made in the tandem annulation of enynes in the past few years. This review only presents the corresponding reactions of 1,3-enyne structural motifs to provide the functionalized pyridine and pyrrole derivatives.
Yi Liu   +6 more
doaj   +1 more source

Pyridine Scaffolds, Phenols and Derivatives of Azo Moiety: Current Therapeutic Perspectives

open access: yesMolecules, 2021
Synthetic heterocyclic compounds have incredible potential against different diseases; pyridines, phenolic compounds and the derivatives of azo moiety have shown excellent antimicrobial, antiviral, antidiabetic, anti-melanogenic, anti-ulcer, anticancer ...
Tehreem Tahir   +6 more
doaj   +1 more source

Crystal structure of 2,6-bis(3-hydroxy-3-methylbut-1-yn-1-yl)pyridine monohydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2020
In the title pyridine derivative, C15H17NO2·H2O, the two OH groups are oriented in directions opposite to each other with respect to the plane of the pyridine ring. In the crystal, hydrogen bonds between the pyridine molecule and the water molecule, viz.
Take-aki Koizumi, Toshikazu Takata
doaj   +1 more source

Synthesis, Characterization and Antiproliferative Evaluation of Pt(II) and Pd(II) Complexes with a Thiazine-Pyridine Derivative Ligand

open access: yesPharmaceuticals, 2021
Chemical, pharmacological, and clinical research on anticancer coordination complexes has led to noteworthy anticancer drugs such as cisplatin, carboplatin and oxaliplatin.
Silvia Gutiérrez-Tarriño   +5 more
doaj   +1 more source

The Reaction of Cyanoacetylhydrazine with ω-Bromo(4-methyl)acetophenone: Synthesis of Heterocyclic Derivatives with Antitumor Activity

open access: yesMolecules, 2010
New approaches for the synthesis of hydrazide-hydrazone derivatives were demonstrated as well as some heterocyclizations of such derivatives to afford 1,3,4-triazine, pyridine and 1,3,4-oxadiazine derivatives.
Rafat M. Mohareb, Abeer A. Mohamed
doaj   +1 more source

Crystal structure of (pyridine-κN)bis(quinolin-2-olato-κ2N,O)copper(II) monohydrate

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2015
The title complex, [Cu(C9H6NO)2(C5H4N)]·H2O, adopts a slightly distorted square-pyramidal geometry in which the axial pyridine ligand exhibits a long Cu—N bond of 2.305 (3) Å.
Benjamin Hawks   +3 more
doaj   +1 more source

Eco-Friendly Direct GC–MS Method for Estimation of Niacin and Related Impurities Involving Pyridine in Food Supplements

open access: yesSeparations, 2021
Niacin is a water-soluble vitamin whose deficiency causes many disorders and diseases, including pellagra and high blood cholesterol. Herein, niacin and four common impurities, isonicotinic acid (ISO), 5-ethyl-2-methylpyridine (MP), pyridine-2, 5 ...
Atiah H. Almalki   +2 more
doaj   +1 more source

(E)-1-(Pyridin-4-yl)propan-1-one O-tosyl oxime

open access: yesIUCrData, 2017
The title compound, C15H16N2O3S, was obtained by the reaction of (E)-1-(pyridin-4-yl)propan-1-one oxime and para-toluenesulfonic acid. The pyridine ring makes a dihedral angle of 54.70 (10)° with the benzene ring.
Michael Eitel   +2 more
doaj   +1 more source

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