Results 41 to 50 of about 73,143 (258)

Electronic Tuning of Mixed Quinoidal‐Aromatic Conjugated Polyelectrolytes: Direct Ionic Substitution on Polymer Main‐Chains [PDF]

, 2019
The synthesis of conjugated polymers with ionic substituents directly bound to their main chain repeat units is a strategy for generating strongly electron-accepting conjugated polyelectrolytes, as demonstrated through the synthesis of a series of ionic ...
Anderson, Christopher L, Dai, Nan, He, Bo, Liu, Yi, Teat, Simon J, Wang, Shu   +5 more
core   +3 more sources

Pyridinium dichlorophosphinomethylides

Heteroatom Chemistry, 2001
AbstractSeven new pyridinium dichlorophosphinomethylides 2 have been obtained from dichlorophosphinylation of the pyridinium methylides generated in situ. 2 give 1,3‐bis(alkoxycarbonyl)‐2‐phosphaindolizines 4 through 1,5‐electrocyclization of the intermediate, bis(pyridinium ylidyl)phosphenium chloride 3 which is generated either from ...
Raj K. Bansal, Neelima Gupta, Mukta Baweja, Leena Hemrajani, Vimal K. Jain   +4 more
openaire   +1 more source

4-(Ammoniomethyl)pyridinium dichloride [PDF]

Acta Crystallographica Section E Structure Reports Online, 2008
The title compound, C6H10N22+·2Cl−, contains a network of 4-(ammonio­meth­yl)pyridinium cations and chloride anions which are inter­connected by N—H Cl hydrogen bonds. The crystal packing is also influenced by inter­molecular π–π stacking inter­actions between identical anti­parallel organic cations with a face-to-face distance of ca 3.52 Å.
Meher El Glaoui, Riadh Kefi, O. Amri, Erwann Jeanneau, C. Ben Nasr   +4 more
openaire   +3 more sources

Self-assembly of triblock copolymers in aqueous solution [PDF]

, 2008
Indexación: ScieloThe aggregation of PE4VP-b-PS-b-PE4VP block copolymers was studied in aqueous solution. Triblock copolymers P4VP-b-PS-b-P4VP were synthesized by sequential anionic polymerization of poly(styrene) and poly(4-vinylpirydine) using sodium ...
Fuentes, Irma, Martínez, Francisco, Olea, Andrés F., Silva, Patricio, Urbano, Bruno   +4 more
core   +3 more sources

Stille Reaction on Pyridinium Cations. [PDF]

ChemInform, 2002
AbstractFor Abstract see ChemInform Abstract in Full Text.
García Cuadrado, Domingo, Cuadro Palacios, Ana María, Álvarez-Builla Gómez, Julio, Vaquero López, Juan José   +3 more
openaire   +2 more sources

Investigation of the Pyridinium Ylide—Alkyne Cycloaddition as a Fluorogenic Coupling Reaction

Molecules, 2016
The cycloaddition of pyridinium ylides with alkynes was investigated under mild conditions. A series of 13 pyridinium salts was prepared by alkylation of 4-substituted pyridines.
Simon Bonte, Ioana Otilia Ghinea, Rodica Dinica, Isabelle Baussanne, Martine Demeunynck   +4 more
doaj   +1 more source

Direct methane conversion to methanol by ionic liquid-dissolved platinum catalysts [PDF]

, 2006
Ternary systems of inorganic Pt salts and oxides, ionic liquids and concentrated sulfuric acid are effective at catalyzing the direct, selective oxidation of methane to methanol and appear to be more water tolerant than the Catalytica ...
Cheng, Jihong, Haught, Mark, Li, Zaiwei, Tang, Yongchun   +3 more
core   +2 more sources

Cross-linking of dermal sheep collagen using a water-soluble carbodiimide [PDF]

, 1996
A cross-linking method for collagen-based biomaterials was developed using the water-soluble carbodiimide 1-ethyl-3-(3-dimethyl aminopropyl)carbodiimide hydrochloride (EDC).
Dijkstra, P.J., Feijen, J., Luyn, M.J.A. van, Nieuwenhuis, P., Olde Damink, L.H.H., Wachem, P.B. van   +5 more
core   +8 more sources

Synthesis, biological evaluation, and computational studies of N-benzyl pyridinium–curcumin derivatives as potent AChE inhibitors with antioxidant activity

Journal of Enzyme Inhibition and Medicinal Chemistry, 2023
A library of N-benzylpyridinium-based compounds, 7a-j and 8a-j, was designed and synthesised as potential acetylcholinesterase) AChE (inhibitors. An in vitro assay for the synthesised compounds showed that most compounds had significant AChE inhibitory ...
Nafisah M. Al-Rifai, Nemeh M. Al-Khalileh, Jalal A. Zahra, Musa I. El-Barghouthi, Fouad H. Darras   +4 more
doaj   +1 more source

Photodegradation of nimodipine and felodipine in microheterogeneous systems [PDF]

, 2012
Indexación: Web of Science; ScieloThe photochemical behavior of nimodipine (NIMO) and felodipine (FELO), photolabile drugs widely used as antihypertensive calcium channel blockers, is studied in constrained media.
Brito, Julio, García, Cristóbal, Günther, Germán, Morales, Javier, Núñez-Vergara, Luis J., Pizarro, Nancy, Pozo, Andrés   +6 more
core   +1 more source