Results 121 to 130 of about 23,873 (241)
HPLC Analysis of Aliphatic Sulfonate Surfactants using Ion-Pair Detection
Molecules, 2005 A method was developed for the analysis of a number of surfactants which contained no UV-chromophores, using RP-HPLC with Indirect Photometric Detection, IPD.
P. Carlsen +3 more
doaj +1 more source
The Chemical Record, EarlyView.The transport properties and electrochemical reactivity of protic ionic liquids (ILs) are compared with those of aprotic analogs. Protic ILs are characterized by strong cation–anion hydrogen bonding and labile protons, enabling proton conduction and highlighting their potential as fuel cell electrolytes.
Masayoshi Watanabe, Seiji Tsuzuki
wiley +1 more source
Preparation of indole alkaloids via 1,4-dihydropyridine stage or cyano-masked iminium intermediates [PDF]
, 2004 Methods to synthesise substituted pyridine derivatives utilising 1,4-dihydropyridines were studied. Addition of nucleophiles to N-alkyl pyridinium salts and application of the products to alkaloid synthesis were investigated.
Putkonen, Tiina
core
Templated synthesis of cyclic poly(ionic liquid)s
, 2019 Charged cyclic polymers, e.g. cyclic DNAs and polypeptides, play enabling roles in organisms, but their synthesis was challenging due to the well known polyelectrolyte effect.
Tang, Qingquan +3 more
core +1 more source
Cefdinir binding to a class A β‐lactamase revealed by serial cryo‐crystallography
Acta Crystallographica Section D, EarlyView.Serial cryo‐crystallography reveals the structure of the extended‐spectrum β‐lactamase CTX‐M‐14 in complex with the third‐generation cephalosporin antibiotic cefdinir.One of the most common resistance mechanisms against antibiotics employed by Gram‐negative bacteria involves the production of β‐lactamases, resulting in rapid hydrolysis of the ...
Gargi Gore +4 more
wiley +1 more source
N-Amino Pyridinium Salts in Organic Synthesis. [PDF]
Org Chem Front, 2023 Roychowdhury P +3 more
europepmc +1 more source
Recent Approaches for the Synthesis of Pyridine and Quinoline Cores Present in Natural Products
Advanced Synthesis &Catalysis, Volume 368, Issue 10, 19 May 2026.An anthology of the most recent methods used to synthesize pyridines and quinolines found in natural products over the last decade. Pyridines, quinolines, and their derivatives represent a class of significant heterocyclic compounds that are prevalent in a multitude of natural products, including alkaloids found in plants, fungi, insects, marine ...
Carl Bowman +2 more
wiley +1 more source
Noncovalent Interactions in Halogenated Pyridinium Salts of the Weakly Coordinating Anion [Al(OTeF5 )4 ]. [PDF]
Chemistry, 2023 Kotsyuda S +6 more
europepmc +1 more source
Dearomatization with Axial‐to‐Central Chirality Conversion
European Journal of Organic Chemistry, Volume 29, Issue 17, 5 May 2026.Atropisomers are exciting synthetic targets with unique properties, which find applications in many fields of chemistry. However, considering them as substrates is not very frequent, notably in the context of dearomatization reaction. We wish to discuss the different strategies for the dearomatization of aromatic atropisomers with axial‐to‐central ...
Morgane Mando +3 more
wiley +1 more source
Beilstein Journal of Organic Chemistry, 2018 The sequential three-component reaction between o-hydroxybenzaldehydes, N-(cyanomethyl)pyridinium salts and a nucleophile towards substituted chromenoimidazopyridines under oxidative conditions has been developed. The employment of Mn(OAc)3·2H2O or KMnO4
Olga A. Storozhenko +5 more
doaj +1 more source