Journal ArticleDOI
Reduction of olefinic bond under ammonia chemical ionization
TLDR
The unsaturated trans dicarboxylates (III and IV) form stable (M+N2H7)+ adducts in addition to the (m+NH4)+ adduction as discussed by the authors.About:
This article is published in Tetrahedron.The article was published on 1984-01-01. It has received 16 citations till now. The article focuses on the topics: Chemical ionization & Double bond.read more
Citations
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Journal ArticleDOI
Ammonia chemical ionization mass spectrometry
Journal ArticleDOI
Reactions between substrate molecules and chemical ionization reagent gases prior to ionization
TL;DR: A survey of side reactions such as oxidation, hydrogenation, reductive removal of substituents and radical processes is presented, and the implications for mass spectroscopic analysis are pointed out.
Journal ArticleDOI
Reduction of azides under conditions of desorption-chemical ionization or fast-atom-bombardment mass-spectrometry.
TL;DR: Experimental evidence is provided to corroborate the reduction of azido groups in some carbohydrate derivatives and other substances, and possible explanations are proposed for the phenomenon.
Journal ArticleDOI
Mechanism of reduction of double bond under chemical ionization conditions
TL;DR: In this article, the mechanism of double bond reduction occurring in certain conjugated ketones, nitriles, acids and esters under chemical ionization conditions has been studied.
References
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Journal ArticleDOI
Intramolecular ion solvation effects on gas-phase acidities and basicities. A new stereochemical probe in mass spectrometry
F. J. Winkler,D. Stahl +1 more
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Stereochemical applications of mass spectrometry. II—Chemical ionization mass spectra of isomeric dicarboxylic acids and derivatives
TL;DR: The chemical ionization mass spectra of cis and trans cyclohexane-1,2-dicarboxylic acids are essentially identical and show extensive fragmentation of the [IMH]+ ion as mentioned in this paper.
Journal ArticleDOI
Chemical ionization mass spectra of mononitroarenes
TL;DR: In this paper, the H2 and CH4 chemical ionization mass spectra of a selection of substituted nitrobenzenes have been determined, and it is shown that reduction of the nitro group to the amine is favored by high source temperatures and the presence of water in the ion source.
Journal ArticleDOI
Site of Protonation and Conformational Effects on Gas-Phase Basicity in Beta-Amino Alcohols - the Nature of Internal H-Bonding in Beta-Hydroxy Ammonium-Ions
TL;DR: In this paper, the authors present a method to detect the presence of a tumor in the human brain using the Web of Science Record created on 2005-11-09, modified on 2017-05-12.
Journal ArticleDOI
A fast atom bombardment and field ionization/field desorption study of some isomeric unsaturated dicarboxylic acids
TL;DR: In this paper, the isomeric dicarboxylic acids, such as maleic and fumaric acid and their methyl homologues, have been investigated using fast atom bombardment, field ionization and field desorption mass spectrometry.
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