Results 11 to 20 of about 946 (177)

Coupling Aqueous Phase Chemical Actinometry with EPR Spectroscopy: An Approach for Probing Photochemical Processes at the Air-Sea Interface. [PDF]

open access: yesChemphyschem
Photochemical investigations were coupled with radical detection for quantifying oxidative processes in sea‐surface microlayer (SML) samples. A chemical actinometry approach was employed to measure photon flux in in situ EPR experiments and under solar irradiation.
Scheres Firak D   +5 more
europepmc   +2 more sources

Deconstructive Radical-Radical Coupling for Programmable Remote Acylation. [PDF]

open access: yesAngew Chem Int Ed Engl
A unified approach to access a variety of 1,n‐dicarbonyls through a radical‐promoted deconstructive process utilizing dual photocatalysis/carbene catalysis is reported. The utility of this strategy is demonstrated with a broad scope with robust functional group tolerance along with application in the preparation of γ‐amino esters, three‐component ...
Cao J, Schull CR, Scheidt KA.
europepmc   +3 more sources

Photocatalytic Oxidation of Alcohols with Organic Dyes: From Homogeneous Systems to Sensitized Materials. [PDF]

open access: yesChemistry
We discuss the developments in the light‐driven oxidation of alcohols with PC. We report cases where the homogeneous systems can be interfaced with electrochemical tools or adapted in flow and where the PC are integrated in sensitized materials. Abstract The oxidation of alcohols retains an enormous importance in industry and in synthetic organic ...
Tacchi E, Rossi G, Sartorel A.
europepmc   +2 more sources

Cyclopropenes in Photochemical Reactions. [PDF]

open access: yesChemistry
The photochemical side of cyclopropenes. Cyclopropenes are valuable synthetic tools in organic chemistry. In particular, this review focuses on the photochemistry of cyclopropenes. The reactivity of cyclopropenes excited by irradiation is discussed showing their unique potential for organic synthesis.
Suárez-García D, Coto D, Vicente R.
europepmc   +2 more sources

A structural model for the full-length blue light-sensing protein YtvA from Bacillus subtilis, based on EPR spectroscopy [PDF]

open access: yes, 2013
A model for the full-length structure of the blue light-sensing protein YtvA from Bacillus subtilis has been determined by EPR spectroscopy, performed on spin labels selectively inserted at amino acid positions 54, 80, 117 and 179. Our data indicate that
Bittl, Robert   +7 more
core   +1 more source

Synthesis of a library of antiviral silvestrol analogues and development of novel methodologies in the field of radical chemistry [PDF]

open access: yes, 2023
The first part of this dissertation deals with the design and synthesis of silvestrol and rocaglamide derivatives exhibiting antiviral properties. These two natural products, which belong to the Flavagline group, were isolated from different species of ...
Schulz, Göran
core   +2 more sources

ESR study of the spin adducts of three analogues of DEPMPO substituted at C-4 or C-3 [PDF]

open access: yes, 2014
In the research program of some new derivatives of spin-trap DEPMPO (5-diethoxyphosphoryl-5-methyl-1-pyrroline-N-oxide) leading to various radical adducts with photogenic ESR signals, three phosphorylated pyrroline-N-oxides were studied in spin trapping.
Chalier, Florence   +4 more
core   +3 more sources

Enhancement of trace organic contaminant degradation by crude enzyme extract from Trametes versicolor culture: Effect of mediator type and concentration [PDF]

open access: yes, 2014
The performance of two redox mediating compounds, namely 1-hydroxybenzotriazole (HBT) and syringaldehyde (SA), was compared in terms of enhancement of enzymatic degradation of a diverse set of 14 phenolic and 16 non-phenolic trace organic contaminants ...
Hai, Faisal Ibney   +7 more
core   +2 more sources

New Developments in Spin Labels for Pulsed Dipolar EPR [PDF]

open access: yes, 2014
Spin labelling is a chemical technique that enables the integration of a molecule containing an unpaired electron into another framework for study. Given the need to understand the structure, dynamics, and conformational changes of biomacromolecules ...
Concilio, M   +3 more
core   +2 more sources

Advancing Organic Chemistry Using High‐Throughput Experimentation

open access: yesAngewandte Chemie, Volume 137, Issue 40, September 26, 2025.
This review outlines major advances in the design, execution, analysis, and data management phases of high‐throughput experimentation (HTE). The limitations and potential opportunities of applying modern HTE to organic synthesis are highlighted. Abstract High‐throughput experimentation (HTE), the miniaturization and parallelization of reactions, is a ...
Reem Nsouli   +2 more
wiley   +2 more sources

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