Results 71 to 80 of about 4,491 (261)

Sterically Hindered Benzophenones via Rhodium-Catalyzed Oxidative Arylation of Aldehydes

open access: yes, 2016
Efficient cross-coupling, allowing a straightforward access to congested benzophenones, between aromatic aldehydes and potassium aryltrifluoroborates, is described in the presence of a rhodium/tri-tert-butylphosphane catalyst system and acetone as ...
Alexander Roesch (2416078)   +3 more
core   +2 more sources

Separation and Migration Behavior of Benzophenones in Capillary Zone Electrophoresis

open access: yes, 2015
The migration behavior and separation of eight benzophenones selected were investigated by capillary zone electrophoresis in the range of pH 7.5–11.5.
Shiung, Yuan-Chi;Chang, Shu-Wen;Chen, Chih-Yu;Lin, Chen-Hsing
core  

Glyoxylic‐Acetal‐Based Gel‐Polymer Electrolytes for Lithium‐Ion Batteries

open access: yesBatteries &Supercaps, Volume 8, Issue 3, March 2025.
A safe electrolyte based on tetraethoxyglyoxal (LE) is combined with a methacrylate polymer matrix. The resulting gel‐polymer electrolyte (GPE) exhibits an increased flash point, suitable ionic conductivity, and a stable performance in lithium‐ion battery cells.
Christian Leibing   +4 more
wiley   +1 more source

Benzophenones and Xanthones with Isoprenoid Groups from Cudrania cochinchinensis

open access: yes, 2016
Four new benzophenones with two isoprenoid groups, cudraphenones A−D (1−4), and three new xanthones also with two isoprenoid units, cudraxanthones P−R (5−7), were isolated from the roots of Cudrania cochinchinensis, together with 19 known phenolic ...
Toshio Fukai (3060237)   +5 more
core   +1 more source

Methyl on the Bridge: 2‐Methyl Propellane as Precursor for 1,3‐Substituted 2‐Methylated Bicyclo[1.1.1]Pentanes

open access: yesChemistry – A European Journal, EarlyView.
The synthesis of 2‐methyl propellane and its conversion to various 1,2‐ and 1,2,3‐di‐ and trisubstituted bicyclopentanes is reported. Abstract Bicyclo[1.1.1]pentanes (BCPs) have emerged as isosteric replacements for mono‐ and para‐substituted benzene rings in medicinal and materials applications, involving substitution at the BCP bridgehead (1,3 ...
Sean R. Verschaeve   +4 more
wiley   +1 more source

Lewis‐Acidic Properties and Catalytic Behavior of Hydroboration‐ and Diolysis‐Derived NHC‐Stabilized Borenium Cations

open access: yesChemistry – A European Journal, EarlyView.
A series of thirteen (N‐heterocyclic carbene) NHC‐stabilized borenium cations is synthesized from NHC→BH3 complexes via hydroboration and condensation with diols. The novel compounds are fully characterized. Eight crystal structures are presented. Kinetic and NMR data show how the structural features translate to catalytic activity in hydrosilylation ...
Michał Jakubczyk   +4 more
wiley   +1 more source

PHOTOINTERACTION OF BENZOPHENONE TRIPLET WITH LYSOZYME

open access: yesPhotochemistry and Photobiology, 1989
AbstractThe quenching of the benzophenone triplet by lysozyme and its constituent amino acids in aqueous solutions have been studied. Native lysozyme quenches the benzophenone triplet with a high rate constant, 4 × 109M‐1s‐1. The quenching process takes place with production of significant amounts of free ketyl radicals, φketyl=0.56, but with a very ...
ENCINAS, MV   +4 more
openaire   +3 more sources

Iron-Mediated Synthetic Routes to Unsymmetrically Substituted, Sterically Congested Benzophenones

open access: yes, 2016
A new synthetic route to unsymmetrically substituted benzophenones, relying upon iron-mediated reactions in all of the key steps, is described. The key buiding block, η6-2-chloro-carbomethoxybenzene-η5-cyclopentadienyl iron hexafluorophosphate (4), is ...
J. Peter Storm (3025461)   +1 more
core   +1 more source

The Role of Iron‐Hyponitrite Intermediates in Biology and Insights From Synthetic Model Complexes

open access: yesChemistry – A European Journal, EarlyView.
Despite the difference in active site architecture, NO reduction by different NOR enzymes is expected to be linked by a common intermediate: hyponitrite (N2O22−). However, experimentally, very little is known about the coordination chemistry of iron with hyponitrite and the expected Fe‐hyponitrite intermediates.
Michael O. Lengel, Nicolai Lehnert
wiley   +1 more source

Home - About - Disclaimer - Privacy