Results 91 to 100 of about 73,143 (258)

Anomeric Amides: Valuable Reagents in Synthetic Organic Chemistry

Angewandte Chemie International Edition, EarlyView.
Enabling late‐stage transformations and skeletal editing, anomeric amides have recently emerged as powerful synthetic tools. Due to their unique properties, anomeric amides have been employed in reactions ranging from amination to halogenation. This minireview provides an overview of recent progress in using anomeric amides across a variety of ...
Arushi Garg, Jordan Vigier, Hélène Lebel, Tatiana Besset   +3 more
wiley   +1 more source

On the Chemical Stabilities of Ionic Liquids

Molecules, 2009
Ionic liquids are novel solvents of interest as greener alternatives to conventional organic solvents aimed at facilitating sustainable chemistry. As a consequence of their unusual physical properties, reusability, and eco-friendly nature, ionic liquids ...
Yen-Ho Chu, Ming-Chung Tseng, Venkatesan Srinivasadesikan, Subbiah Sowmiah   +3 more
doaj   +1 more source

2-(Ethoxycarbonyl)pyridinium nitrate [PDF]

Acta Crystallographica Section E Structure Reports Online, 2010
In the title compound, C(8)H(10)NO(2) (+)·NO(3) (-), the cation is essentially planar with C-O-C-C and C-O-C-O torsion angles of -178.1 (2) and 2.1 (4)°, respectively. In the crystal, N-H⋯O and C-H⋯O hydrogen-bond inter-actions stabilize the structure.
openaire   +3 more sources

Surfactant‐Enhanced Electrospun Nanofiber Filters for Efficient Viral and Bacterial Inactivation

Journal of Applied Polymer Science, EarlyView.
In this work, electrospun polyacrylonitrile (PAN) nanofibrous filters functionalized with surfactants (CTAB, CPC, and SDS) were developed for air filtration applications. The PAN nanofiber mats enable efficient particulate matter capture while simultaneously providing antimicrobial and antiviral activity against bacteria (E. coli and S.
Edilton N. da Silva, Paulo A. M. Chagas, Gustavo C. da Mata, Felipe A. Lima, Fabiana B. Furtado, Wanderley P. de Oliveira, Rejane M. T. Grotto, Clovis W. O. de Souza, Mônica L. Aguiar, Vádila G. Guerra   +9 more
wiley   +1 more source

The Challenging P‐Alkylation of Aromatic Phosphorus Heterocycles and Follow‐Up Reactions

ChemistryEurope, EarlyView.
P‐alkylation of λ3σ2‐phosphinines is hindered by weak nucleophilicity and scarce synthetic access, previously requiring multistep routes or extreme electrophiles. A direct ambient‐condition method is reported using 3,5‐bis(trimethylsilyl)‐phosphinine/B(C6F5)3 with esters or iso(thio)cyanates to generate stable 1‐R‐phosphininium salts.
Samantha Frank, Ádám Horváth, Duy Nguyen, Moritz J. Ernst, Simon Steinhauer, Zoltán Benkő, Christian Müller   +6 more
wiley   +1 more source

Crystal structure and thermal behaviour of pyridinium styphnate

Acta Crystallographica Section E: Crystallographic Communications, 2015
In the crystal structure of the title molecular salt, C5H6N+·C6H2N3O8− (systematic name: pyridinium 3-hydroxy-2,4,6-trinitrophenolate), the pyridinium cation and the 3-hydroxy-2,4,6-trinitrophenolate anion are linked through bifurcated N—H...(O,O ...
Selvarasu Muthulakshmi, Doraisamyraja Kalaivani   +1 more
doaj   +1 more source

The Atomistic Force Field for Pyridinium-Based Ionic Liquids: Reliable Transport Properties

, 2014
Reliable force field (FF) is a central issue in successful prediction of physical chemical properties via computer ...
Chaban, Vitaly V., Voroshylova, Iuliia V.   +1 more
core   +1 more source

Organophotoredox/Cobalt‐Catalyzed Retro‐Hydroformylation of Aldehydes

ChemistryEurope, EarlyView.
A new photoredox/cobalt retro‐hydroformylation is developed. This one‐pot two‐step process involves the in situ formation of the corresponding 1,4‐dihydropyridine as key intermediate. Under mild reaction conditions, alkenes are efficiently produced from a wide range of aliphatic α‐monosubstituted aldehydes, with high functional‐group tolerance.
Augustin Nouaille, Emmanuel Magnier, Corinne Gosmini, Guillaume Dagousset   +3 more
wiley   +1 more source

Valorization of oat hulls and spent coffee grounds into pyridinium-modified granular adsorbents for water purification

Sustainability Science and Technology
Agro- and food-waste biomass such as oat hull (Oh) or spent coffee ground (SCG) biomass can yield sustainable adsorbents for water treatment. However, adsorbents in powdered form often face constraints in practical applications (column applications due ...
Bernd G K Steiger, Deysi J Venegas-García, Lee D Wilson   +2 more
doaj   +1 more source

ZnO/ionic liquid catalyzed biodiesel production from renewable and waste lipids as feedstocks [PDF]

, 2019
A new protocol for biodiesel production is proposed, based on a binary ZnO/TBAI (TBAI = tetrabutylammonium iodide) catalytic system. Zinc oxide acts as a heterogeneous, bifunctional Lewis acid/base catalyst, while TBAI plays the role of phase transfer ...
Casiello, Michele, Catucci, Lucia, Di Bitonto, Luigi, D’accolti, Lucia, Fracassi, Francesco, Fusco, Caterina, Laurenza, Amelita G., Nacci, Angelo, Pastore, Carlo   +8 more
core   +1 more source