Results 21 to 30 of about 3,124,995 (289)

Hydrogen-bonding chain and dimer motifs in pyridinium and morpholinium hydrogen oxalate salts

open access: yesActa Crystallographica Section E: Crystallographic Communications, 2018
We present here three compounds consisting of pyridinium or morpholinium hydrogen oxalates, each displaying different hydrogen-bonding motifs, resulting in chains for 4-(dimethylamino)pyridinium hydrogen oxalate 0.22-hydrate, C7H11N2+·C2HO4−·0.22H2O (1),
David Z. T. Mulrooney   +5 more
doaj   +1 more source

Influence of molecular structure on the antimicrobial function of phenylenevinylene conjugated oligoelectrolytes. [PDF]

open access: yes, 2016
Conjugated oligoelectrolytes (COEs) with phenylenevinylene (PV) repeat units are known to spontaneously intercalate into cell membranes. Twelve COEs, including seven structures reported here for the first time, were investigated for the relationship ...
Bazan, Guillermo C   +5 more
core   +2 more sources

Synthesis of Pyridinium Amphiphiles Used for Transfection and Some Characteristics of Amphiphile/DNA Complex Formation [PDF]

open access: yes, 2000
Pyridinium amphiphiles have found practical use for the delivery of DNA into cells. Starting from 4-methylpyridine, a general synthesis has been devised for the production of pyridinium amphiphiles which allows variation in both the hydrophobic part and ...
Bosgraaf, Bouke,   +10 more
core   +2 more sources

Design and synthesis of novel bis-pyridinium based-ionic liquids as potent antiparasitic agents

open access: yesHeliyon, 2023
Focused bis-pyridinium based-ionic liquids were successfully synthesized through the quaternization of the selected 1,2-di(pyridin-4-yl)ethane followed by metathetical anion exchange.
Esraa Abdelhamid Moneer   +9 more
doaj   +1 more source

Reaction of Pyridinium Salts with Active Methylene Compounds

open access: yesYAKUGAKU ZASSHI, 2006
The carbon-carbon bond-forming reactions of 1-methyl-2-methylthiophenylpyridinium iodides with active methylene compounds (such as dimethyl malonate, malononitrile) using NaH as a base gave the 2-substituted methylene-1,2-dihydropyridine derivatives.
Reiko, Fujita   +3 more
openaire   +3 more sources

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

Asymmetric addition of chiral boron-ate complexes to cyclic iminium ions [PDF]

open access: yes, 2014
Boron-ate complexes derived from enantioenriched secondary benzylic boronic esters and aryl lithiums have been reacted with quinolinium, pyridinium and dihydroisoquinolinium salts to give enantioenriched heterocyclic structures with very high ...
Aggarwal, Varinder K.   +4 more
core   +2 more sources

Novel amphiphilic pyridinium ionic liquids-supported Schiff bases: ultrasound assisted synthesis, molecular docking and anticancer evaluation

open access: yesChemistry Central Journal, 2018
Background Pyridinium Schiff bases and ionic liquids have attracted increasing interest in medicinal chemistry. Results A library of 32 cationic fluorinated pyridinium hydrazone-based amphiphiles tethering fluorinated counteranions was synthesized by ...
Fawzia Faleh Al-Blewi   +6 more
doaj   +1 more source

A method for the nucleophilic fluorination of 4-dimethylaminopyridine (DMAP) pyridinium salts

open access: yesResults in Chemistry, 2023
Fluorinated organic compounds have proven to be beneficial in various industries. Recent research has utilized quaternary ammonium salts as precursors for fluorinations using the radioactive isotope 18F.
Derek Cressy   +4 more
doaj   +1 more source

Synthesis of novel room temperature chiral ionic liquids. application as reaction media for the heck arylation of aza-endocyclic acrylates. [PDF]

open access: yes, 2010
New achiral and chiral RTILs were prepared using novel and/or optimized synthetic routes. These new series of imidazolinium, imidazolium, pyridinium and nicotine-derived ionic liquids were fully characterized including differential scanning calorimetry ...
Correia, Carlos R. D.   +4 more
core   +4 more sources

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