Results 31 to 40 of about 51,809 (295)

The role of acid in the formation of hydrogen-bonded networks featuring 4,4'-dicarboxy-2,2'-bipyridine (H2dcbp): Synthesis, structural and magnetic characterisation of {[Cu(H2dcbp)Cl2].H2O}2 and [Cu(H2dcbp)(NO3)2(H2O)] [PDF]

open access: yes, 2005
Reported herein are the synthesis, structural and magnetic characterisation of two hydrogen-bonded networks featuring the 4,4?-dicarboxy-2,2?-bipyridine (H2dcbp) ligand: {[Cu(H2dcbp)(Cl)2]·H2O}2 1 and [Cu(H2dcbp)(NO3)2(H2O)] 2.
Aakeroy   +63 more
core   +1 more source

Design of co-crystals/salts of some Nitrogenous bases and some derivatives of thiophene carboxylic acids through a combination of hydrogen and halogen bonds [PDF]

open access: yes, 2014
BACKGROUND: The utility of N-heterocyclic bases to obtain molecular complexes with carboxylic acids is well studied. Depending on the solid state interaction between the N-heterocyclic base and a carboxylic acid a variety of neutral or ionic synthons are
Packianathan Muthiah, Samson Jennifer
core   +1 more source

Synthesis of New trans-2-Benzyl-3-(furan-2-yl)-4-substituted-1,2,3,4-tetrahydroisoquinolinones

open access: yesMolecules, 2006
The reaction of homophthalic anhydride and N-(furan-2-yl-methylidene)- benzylamine in different solvents and varying temperatures was studied in detail. Mixtures of the expected trans- and cis-1,2,3,4-tetrahydroisoquinoline-4-carboxylic acids trans-5 and
Mariana D. Palamareva   +2 more
doaj   +1 more source

A Fragment-Based Approach for the Development of G-Quadruplex Ligands: Role of the Amidoxime Moiety [PDF]

open access: yes, 2018
G-quadruplex (G4) nucleic acid structures have been reported to be involved in several human pathologies, including cancer, neurodegenerative disorders and infectious diseases; however, G4 targeting compounds still need implementation in terms of drug ...
Butovskaya, Elena   +7 more
core   +2 more sources

2-(2-Isopropylanilino)pyridine-3-carboxylic acid

open access: yesActa Crystallographica Section E Structure Reports Online, 2006
The asymmetric unit of the title compound, C15H16N2O2, contains two mol­ecules and in each of the mol­ecules, the two aromatic rings, lying in two different planes, are bridged by a secondary amino group. This might be due to steric hindrance caused by the isopropyl group.
Sihui Long, Maxime Siegler, Tonglei Li
openaire   +1 more source

Synthesis of Nitroxide-Annulated Carbocycles and Heterocycles [PDF]

open access: yes, 2012
New, pyrroline nitroxide annulated lactones, polycycles, and maleimide were synthesized by classical and microwave-assisted methodology. We report the application of the metathesis reaction in the presence of nitroxide yielding a pyrroline nitroxide ...
Berente, Zoltán   +4 more
core   +1 more source

The comparative study of linear solvatation energy relationship for the reactivity of pyridine carboxylic acids with diazodiphenylmethane in protic and aprotic solvents [PDF]

open access: yesJournal of the Serbian Chemical Society, 2012
Protic and aprotic solvent effects on the reactivity of picolinic, nicotinic and isonicotinic acid, as well as of some substituted nicotinic acids with diazodiphenylmethane (DDM) were investigated.
Drmanić Saša Ž.   +3 more
doaj   +1 more source

Synthesis, Chemistry and Applications of 5-Hydroxymethyl-furfural And Its Derivatives [PDF]

open access: yes, 2001
The prospect of exciting research activity in the chemistry of furfural derived compounds such as 5-hydroxymethylfurfural (HMF), 2,5-furandicarbaldehyde and 2,5-furan-dicarboxylic acid prompted the writing of this article.
Lewkowski, Jarosław
core   +1 more source

1,2,3-Triazole-4(5)-amines – Convenient Synthetic Blocks for the Construction of Triazolo-Annulated Heterocycles

open access: yesЖурнал органічної та фармацевтичної хімії, 2022
Aim. To analyze and summarize the synthetic potential of 1,2,3-triazole-4(5)-amines as efficient building blocks in the synthesis of triazolo-annulated pyridine, azine and azepine systems. Results and discussion.
Natalia O. Syrota   +3 more
doaj   +1 more source

Quaterpyridine Ligands for Panchromatic Ru(II) Dye Sensitizers [PDF]

open access: yes, 2012
A new general synthetic access to carboxylated quaterpyridines (qpy), of interest as ligands for panchromatic dyesensitized solar cell organometallic sensitizers, is presented.
Abbotto, Alessandro   +6 more
core   +1 more source

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