Now showing items 1-10 of 23
Effect of the tether length upon Truce‐Smiles rearrangement reactions
(John Wiley & Sons, Ltd., 2017-07-07)
This report examines the effect of substrate design upon the Truce‐Smiles rearrangement, an intramolecular nucleophilic aromatic substitution reaction. The length of the molecular spacer that tethers the carbanion nucleophile ...
Truce–Smiles rearrangement of substituted phenyl ethers
(The Royal Society of Chemistry, 2015-05-26)
The requirement of aryl ring activation by strong-electron withdrawing substituents in substrates for the intramolecular nucleophilic aromatic substitution reaction known as the Truce–Smiles rearrangement was examined. ...
Slides to accompany Chemistry and the Environment: A Chemistry Perspective for discussion of Environmental Issues
(University of Winnipeg Library, 2020-09-23)
Differential Enantioselective Transformation of Atropisomeric Polychlorinated Biphenyls by Multiple Bacterial Strains with Different Inducing Compounds
(American Society for Microbiology., 2002-11)
Enantioselective biotransformation of polychlorinated biphenyls (PCBs) has been suggested from studies showing differential occurrence of PCB enantiomers in environmental samples, including river and riparian biota and ...
A new polymorph of phenylselenium trichloride
(International Union of Crystallography, 2019-11)
A second polymorph of phenylselenium trichloride, PhSeCl3 or C6H5Cl3Se, is disclosed, which is comprised of asymmetric chlorine-bridged noncovalent dimer units rather than polymeric chains. These dimers are each weakly ...
Aggregation of Fine Particles at the Sediment-Water Interface
(American Geophysical Union, 1992-11-15)
The presence of a bottom sediment layer agitated by mechanical stirring or by resident organisma (tubificid oligochaetes) significantly increases the rate at which fine (1 µm) cohesive particles are removed from suspension ...
Gypsum Amendment Reduces Redox-Induced Phosphorous Release from Freshly Manured, Flooded Soils to Floodwater
(American Society of Agronomy, Crop Science Society of America, and Soil Science Society of America, 2019-01-01)
The effectiveness of gypsum in reducing runoff P losses from soils and the mechanisms responsible are well documented; however, gypsum amendment effects in reducing redox-induced P losses from flooded soils are less ...
Spectroscopic approaches for studying faint text on a wooden tally from Invincible (1758)
(International Journal of Conservation Science, 2013-01-01)
In this study we describe the application of X-ray fluorescence, variable pressure scanning electron microscopy and visible (420-720 nm) hyperspectral imaging to assess the surface properties of a wood tally stick that was ...
The Truce–Smiles rearrangement and related reactions: a review
(NRC Research Press, 2017-01-16)
The Truce–Smiles rearrangement is an X → C aryl migration reaction that is achieved by an intramolecular nucleophilic aromatic substitution pathway. The reaction exhibits a wide substrate scope with respect to a migrating ...
Statement on Spectroscopic Imaging in Art Conservation: A New Tool for Materials Investigations
(Leonardo Electronic Archive, 2002-09)