Now showing items 1-10 of 4198
Reactivity of 2-aryl-1,3-dithiane anions towards neopentyl, neophyl and phenyl iodides. New evidence for an SRN1 mechanism
(John Wiley & Sons Ltd, 2011-12)
The reactions of 2-(4-Z-phenyl)-1,3-dithiane anions (Z=H, OMe, Cl, CN) with neopentyl, neophyl and phenyl iodides were studied in DMSO, taking into consideration the effect of the Z substituent on the dithiane anions ...
Synthesis of the stationary phase IS-Anionic (internal surface-anionic) for extraction of ochratoxin A and B from samples of beers
(Taylor & Francis Inc, 2008-01-01)
A new IS-anionic stationary phase was synthesized to make on-line extraction of the ochratoxin A and B from samples of beer for HPLC. The propyltriethylammonium chloride stationary phase was characterized affecting it's ...
Electrochemical approach to the radical anion formation from 2′-hydroxy chalcone derivatives
Three 2′-hydroxy chalcone derivatives were electrochemically reduced to the radical anion by a reversible one-electron transfer followed by a chemical dimerization reaction. Under suitable conditions of the medium, the ...
Sequential IRMPD of XGe(OEt)(4)(-) ions: Gas-phase synthesis of novel oxy-germanium anions
(ELSEVIER SCIENCE BV, 2011)
The gas-phase ion/molecule reactions of F(-) and EtO(-) with Ge(OEt)(4) yield readily and exclusively pentacoordinated complexes XGe(OEt)(4)(-) (X = F, EtO) at pressures in the 10(-8) T range as observed by FT-ICR techniques. ...
BEHAVIOR OF THE ANION-RADICALS ELECTROCHEMICALLY GENERATED IN THE REDUCTION OF NOSYL AMIDES
(Elsevier B.V., 1994-01-01)
The behaviour of nitrobenzenesulfonamide anion radicals generated from the electrochemical reduction of aliphatic and aromatic amines protected by nitrobenzenesulfonyl (nosyl) groups in N,N-' dimethylformamide has been ...
In search of the best DFT functional for dealing wi th organic anionic species
(Royal Society of Chemistry, 2017-01)
Quantum chemical computational methods are thought to have problems in dealing with unstable organic anions. This work assesses the ability of different Density Functional Theory (DFT) functionals to reproduce the electron ...
Study of the Electronic delocalization in Silicon organic derivatives of benzene and their corresponding anion radicals
(Universidad Autónoma de Occidente, 2011)