Results 91 to 100 of about 23,873 (241)

Deracemization of Axially Chiral Nicotinamides by Dynamic Salt Formation with Enantiopure Dibenzoyltartaric Acid (DBTA)

Molecules, 2013
Dynamic atroposelective resolution of chiral salts derived from oily racemic nicotinamides and enantiopure dibenzoyltartaric acid (DBTA) was achieved by crystallization.
Fumitoshi Yagishita, Norifumi Kamataki, Kazuma Okamoto, Shota Kanno, Takashi Mino, Hyuma Masu, Masami Sakamoto   +6 more
doaj   +1 more source

Imidazole aldoximes effective in assisting butyrylcholinesterase catalysis of organophosphate detoxification. [PDF]

, 2014
Intoxication by organophosphate (OP) nerve agents and pesticides should be addressed by efficient, quickly deployable countermeasures such as antidotes reactivating acetylcholinesterase or scavenging the parent OP.
Amitai, Gabriel, Fokin, Valery V, Radić, Zoran, Sharpless, K Barry, Sit, Rakesh K, Taylor, Palmer   +5 more
core  

Pyridinium N-(2'-azinyl)aminides: Regioselective synthesis of 2-alkylaminoazines [PDF]

, 2000
The regioselective alkylation of pyridinium-N-(2'-azinil)aminides with alkyl halides under mild conditions is described. The alkylation, combined with a reduction of the N-N bond, allows an easy preparation of 2-alkylaminoazines.The authors wish to thank
Burgos Gómez, Carolina, Delgado Jiménez, Francisca, García Navío, José Luis, Izquierdo Ceinos, Ma Luisa, MartÍnez Barrasa, Valentín, Álvarez-Builla Gómez, Julio   +5 more
core   +3 more sources

Bioinspired Design and Synthesis of Polyphenolic Star‐Like and Hyperbranched Polyester Models

Chemistry – A European Journal, EarlyView.
Gallotannin‐inspired star‐like and hyperbranched aromatic polyesters were synthesized from D‐glucose and ABn‐type phenolic acid monomers, such as protocatechuic acid. This bioinspired approach afforded polyphenolic polymeric nanoparticles able to encapsulate hydrophobic dyes, opening new perspectives for biobased encapsulation and delivery systems ...
Guanfei Shen, Laurent Pouységu, Christophe Schatz, Etienne Grau, Stéphane Quideau   +4 more
wiley   +1 more source

The role of onium salts in the oxidation of hydrocarbons by O2 catalysed by cationic phase-transfer reagents [PDF]

, 2000
Experimental and theoretical evidence is presented that cationic phase-transfer catalysts promote the homolytic decomposition of hydroperoxide initiators into radicals, this being a fundamental step in the catalysis of the oxidation of hydrocarbons by O ...
Csányi, László J., Jáky, Károly, Korecz, László, Pálinkó, István, Rockenbauer, Antal   +4 more
core   +1 more source

Tellurium Electrochemistry: From Mechanistic Analysis in Diverse Electrolytic Media to Advanced Energy Storage Applications

ENERGY &ENVIRONMENTAL MATERIALS, EarlyView.
As a metalloid with broad prospects in advanced applications, Te has not been fully clarified in terms of its intricate electrochemical behaviors across varied systems. This review systematically integrates fundamental electrochemical mechanisms, reaction kinetics identifications, and device application insights, establishing a comprehensive framework ...
Meng Zhang, Jiguo Tu, R. Vasant Kumar, Libo Chen, Tangkai Wu, Lili Jiang, Shuqiang Jiao   +6 more
wiley   +1 more source

Synthesis of Pyridinium Moiety Containing Triazolyl Purines

Molbank
Pyridinium salts of 2-piperidinyl-6-triazolylpurine derivatives were obtained by the introduction of pyridinium moieties into the propane-1,3-diol fragment at the N(9) position of purine to enhance the solubility of 2-amino-6-triazolylpurine derivatives ...
Aleksejs Burcevs, Māris Turks, Irina Novosjolova   +2 more
doaj   +1 more source

Push–Pull Ynamines and Push–Pull Ynamides: Synthesis, Structure, Reactivity, and Application

European Journal of Organic Chemistry, EarlyView.
Push–pull ynamines and push–pull ynamides, which carry an EWG and an amino or amido group as EDG, are highly interesting classes of EDG‐EWG alkynes that have been intensively studied due to their exceptional reactivity. In this review, the synthesis, structure, reactivity, and application of push–pull ynamines, push–pull ynecarbamates, push–pull ...
Hans‐Joachim Gais
wiley   +1 more source

An Efficient Synthesis of Pyridoxal Oxime Derivatives under Microwave Irradiation [PDF]

, 2014
Quaternary salts of pyridoxal oxime have been synthesized by the quaternization of pyridoxal oxime with substituted phenacyl bromides using microwave heating.
Bušić, Valentina, Cetina, Mario, Gašo-Sokač, Dajana, Jukić, Marijana   +3 more
core   +4 more sources

1,1‐Disubstituted Vinylbromides: Versatile Building Blocks for the Synthesis of Nitrogen‐Containing Heterocycles

European Journal of Organic Chemistry, EarlyView.
1,1‐Disubstituted vinylbromides are key intermediates for constructing nitrogen‐containing heterocycles. This review provides an overview of the synthetic applications of 1,1‐disubstituted vinylbromides and summarizes recent developments in reaction methodologies, mechanistic insights, and the structural diversity of N‐heterocyclic compounds accessible
Anne Westermeyer, Jun Fang, Chonghuo Liu, Guillaume Lefèvre, Gérard Guillamot, Phannarath Phansavath, Virginie Ratovelomanana‐Vidal   +6 more
wiley   +1 more source