Results 111 to 120 of about 308,670 (298)

Novel nucleophilic addition SN2'–SN2' pathway: utilizing phosphonium salts as electrophilic agents for synthesizing new phosphine oxides of Morita–Baylis–Hillman (MBH) adducts

open access: yesComptes Rendus. Chimie
An efficient and practical approach has been developed for synthesizing phosphonates and phosphine oxides from Morita–Baylis–Hillman (MBH) adducts through the alkylation of trialkylphosphites and ethoxydiphenylphosphine using phosphonium salts derived ...
Elleuch, Haitham   +3 more
doaj   +1 more source

Influence of Anion and Cation Structure of Ionic Liquids on Carboxylic Acids Extraction

open access: yesFrontiers in Chemistry, 2019
A recently proposed new mechanism and a model of reactive extraction of carboxylic acids by hydrophobic ionic liquids (ILs) was tested on five systems from published as well as from new equilibrium data on liquid-liquid extraction of butyric and lactic ...
Ján Marták, Štefan Schlosser
doaj   +1 more source

Polystyrene Nanocomposites Based on Quinolinium and Pyridinium Surfactants [PDF]

open access: yes, 2006
In this paper pyridine and quinoline-containing salts were employed to modify montmorillonite. TGA analysis shows that the quinolinium modified clay has a higher thermal stability than the pyridinium modified clay.
Chigwada, Grace   +2 more
core   +1 more source

H/D Exchange Using Hot Heavy Water

open access: yesCHIMIA, 2018
Metal-catalyzed H/D exchange in hydrothermal deuterium oxide, performed in an autoclave using external heating or in a sealed glass tube under microwave irradiation, was shown to be an efficient method for preparing various deuterium-labeled ...
Seijiro Matsubara   +5 more
doaj   +1 more source

Reaktivität und Selektivität in der Chemie der Diolefin-Metallkomplexe

open access: yesCHIMIA, 1984
The general reactivity of diolefin tricarbonyliron complexes is discussed with regard to their utility in organic synthesis. They are readily convertible into cationic allyl and dienyl complexes, which react regio- and stereospecifically with a large ...
Albrecht Salzer
doaj   +1 more source

Acylation Reactions of Dibenzo‐7‐phosphanorbornadiene: DFT Mechanistic Insights

open access: yesChemistryOpen, 2019
Extensive DFT calculations provide deep mechanistic insights into the acylation reactions of tert‐butyl dibenzo‐7‐phosphanobornadiene with PhCOX (X=Cl, Br, I, OTf) in CH2Cl2 solution. Such reactions are initialized by the nucleophilic P⋅⋅⋅C attack to the
Dr. Zheng‐Wang Qu   +2 more
doaj   +1 more source

Рифенилфосфониевые соли бензильного типа и их антимикробные свойства [PDF]

open access: yes, 2007
Изучено антимикробное действие арилметильных трифенилфосфониевых солей на 6 тест-культурах (S.aureus, E.coli, E.faecalis, P.aureginosa, B.subtilis, C.albicans). Ряд изученных солей показал высокую антимикробную активность.
Листван, B.Н.   +3 more
core  

A Study of Interaction of Methyl Orange with Some Polycations

open access: yesE-Journal of Chemistry, 2012
The interaction between an anionic dye methyl orange and three poly cations namely, poly (N-methy-4-vinylpyridinium iodide) (PM4VPI), poly (vinylbenzyltriphenyl phosphonium chloride) (PVBTPPC) and poly (N-methy-4-vinylpyridinium iodide) (PM2VPI) has been
R. Nandini, B. Vishalakshi
doaj   +1 more source

Dimethyl Derivatives of 2,2′-Bipyridine as Ligands in [W(CN)6(bpy)]2−-Type Complexes

open access: yesMolecules
The thermal decomposition of (XMebpyH)3(H3O)[W(CN)8]·3H2O (where XMebpy denotes 4Mebpy 4,4′-dimethyl-2,2′-bipyridine or 5Mebpy 5,5′-dimethyl-2,2′-bipyridine) in glycerol results in the coordination of XMebpy. Salts of the anion formula [W(CN)6(XMebpy)]2−
Natalia Basta   +3 more
doaj   +1 more source

Home - About - Disclaimer - Privacy