Zobrazeno 1 - 10
of 121
pro vyhledávání: '"Paul G. Wenthold"'
Publikováno v:
The journal of physical chemistry. A. 126(40)
The dissociation of lignin model compounds has been examined using mass spectrometry and collision-induced dissociation charge-remote fragmentation (CID-CRF). The model compounds guaiacol and
Publikováno v:
The Journal of organic chemistry. 87(2)
The electronic effect of the azide functional group on an aromatic system has been investigated using Hammett-Taft parameters obtained from the effect of azide substitution on the gas-phase acidity of phenol. Gas-phase acidities of 3- and 4-azidophen
Publikováno v:
Mass Spectrometry Reviews.
Nitrene anions are a class of reactive intermediates that provide a means for studying the corresponding neutral molecules via electron photodetachment spectroscopy and photoelectron spectroscopy. The added electron makes it possible for protected ni
Autor:
Robert F. Higgins, Paul G. Wenthold, Christopher L. Clark, Matthew P. Shores, Robert J. Ward, Matthias Zeller, John J. Kiernicki, James C. Langford, Justin R. Walensky, Sean N. Natoli, Caleb J. Tatebe, Suzanne C. Bart
Publikováno v:
Organometallics. 38:1031-1040
A family of dinuclear bis(Tp*) (Tp* = hydrotris(3,5-dimethylpyrazolyl)borate) uranium compounds with conjugated organic linkers was synthesized to explore possible electronic communication between ...
Autor:
Paul G. Wenthold, Arthur H. Winter
Publikováno v:
The Journal of Organic Chemistry. 83:12397-12403
In the preceding paper, we examined the addition of nucleophiles to homosymmetric diradicals and showed that the reaction occurs with no symmetry restrictions or other electronic impediments. In this work, we examine the addition of nucleophiles to h
Autor:
Paul G. Wenthold, Sabyasachy Mistry
Publikováno v:
Journal of Mass Spectrometry. 53:947-953
This paper describes a new method for detecting phenols, by reaction with Gibbs reagent to form indophenols, followed by mass spectrometric detection. Unlike the standard Gibbs reaction, which uses a colorometric approach, the use of mass spectrometr
Publikováno v:
Journal of the American Chemical Society. 139:11138-11148
Structures and energetics of o-, m-, and p-quinonimide anions (OC6H4N–) and quinoniminyl radicals have been investigated by using negative ion photoelectron spectroscopy. Modeling of the photoelectron spectrum of the ortho isomer shows that the gro
Publikováno v:
Journal of the American Society for Mass Spectrometry. 28:1313-1323
The dissociation of anionic dipeptides Phe*Gly and GlyPhe*, where Phe* refers to sulfonated phenyl alanine, has been investigated by using ion trap mass spectrometry. The dipeptides undergo collision-induced dissociation (CID) to give the same produc
Publikováno v:
Journal of Physical Organic Chemistry. 28:635-644
The dissociation pathways of a gas-phase amino acid with a canonical (non-zwitterionic) α-amino acid moiety are studied by using mass spectrometry. Investigation of the canonical amino acid moiety is possible because the ionized amino acid, a sulfon
Autor:
Nathan J. Rau, Paul G. Wenthold
Publikováno v:
International Journal of Mass Spectrometry. 377:496-501
Ion–molecule reactions show that p-nitrobenzaldimide, the conjugate-base anion of the benzaldimine, has a low-lying triplet state that is accessible under thermal conditions. Whether it is the ground state or a low-lying excited state cannot be det