Results 71 to 80 of about 1,253 (148)

Organophotocatalytic synthesis of phosphoramidates

open access: yes, 2016
We describe the use of visible light in conjunction with an organic dye for the synthesis of phosphoramidates. Cross dehydrogenative coupling reactions between phosphites and amines are reported using organic dyes and light as catalysts for the first ...
Hao, Guo   +5 more
core   +1 more source

Kinetics and Mechanism of the Kabachnik-Fields Reaction: IV. Salicyaldehyde in the Kabachnik-Fields Reaction [PDF]

open access: yes, 1998
Salicylaldehyde, unlike benzaldehyde, sets the Kabachnik-Fields reaction on the way of initial imine formation. This is explained by the thermodynamic instability of hydroxyphosphonates derived from salicyalaldehyde, which blocks the second possible ...
Cherkasov R.   +3 more
core  

The soft-photon approximation in infrared-laser-assisted atomic ionization by extreme-ultraviolet attosecond-pulse trains [PDF]

open access: yes, 2013
We use the soft-photon approximation, formulated for finite pulses, to investigate the effects of the dressing pulse duration and intensity on simulated attosecond pump–probe experiments employing trains of attosecond extremeultraviolet pulses in ...
Argenti, Luca   +2 more
core   +2 more sources

Atomic ionization by twisted photons: Angular distribution of emitted electrons

open access: yes, 2013
We investigate the angular distribution of electrons that are emitted in the ionization of hydrogen-like ions by twisted photons. Analysis is performed based on the first-order perturbation theory and the non-relativistic Schr\"odinger equation.
Fritzsche, Stephan   +4 more
core   +1 more source

Short-range correlations and meson exchange currents in photonucleon emission [PDF]

open access: yes, 2002
One-nucleon emission processes induced by photon absorption are studied by considering short-range correlations effects. At energies above the giant resonance region the validity of the direct knock-out model has been tested by comparison with continuum ...
A.M. Lallena   +96 more
core   +2 more sources

New 2-Oxoindolin Phosphonates as Novel Agents to Treat Cancer: A Green Synthesis and Molecular Modeling

open access: yesMolecules, 2018
The work reports the facile synthesis of novel α-aminophosphonate derivatives coupled with indole-2,3-dione moieties, namely the diethyl(substituted phenyl/heteroaryl)(2-(2-oxoindolin-3-ylidene)hydrazinyl)methylphosphonates derivatives 4(a–n).
Shailee V. Tiwari   +6 more
doaj   +1 more source

Polarization studies on the two-step radiative recombination of highly-charged, heavy ions

open access: yes, 2009
The radiative recombination of a free electron into an excited state of a bare, high-Z ion is studied, together with its subsequent decay, within the framework of the density matrix theory and Dirac's relativistic equation.
Fritzsche, S.   +6 more
core   +1 more source

Synthesis of α-aminophosphonates by the Kabachnik–Fields reaction and by the Pudovik reaction [PDF]

open access: yes, 2018
α-Aminophosphonates are of significant importance due to their biological activity. The most widely applied synthetic routes towards α-aminophosphonates are the Kabachnik-Fields reaction involving the condensation of amines, oxo compounds and >P(O)H ...
Bálint, Erika   +2 more
core   +1 more source

Transfer ionization and its sensitivity to the ground-state wave function

open access: yes, 2013
We present kinematically complete theoretical calculations and experiments for transfer ionization in H$^++$He collisions at 630 keV/u. Experiment and theory are compared on the most detailed level of fully differential cross sections in the momentum ...
A. A. Gusev   +10 more
core   +1 more source

Synthesis, characterization and bio-activity of some new α-aminophosphonates

open access: yesBulletin of the Chemical Society of Ethiopia, 2009
A convenient and efficient one-pot reaction has been employed for the synthesis of new -aminophosphonates 4a-4k via Kabachnik-Fields reaction in 65-82 % yields.
A. Balakrishna   +4 more
doaj  

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