The mass spectrum of isopropylo-toluate
| Autor: | Tadashige Azami, Yoshio Niwa, Susumu Tajima, Tamae Yanagisawa, Toshikazu Tsuchiya |
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| Rok vydání: | 1981 |
| Předmět: |
inorganic chemicals
McLafferty rearrangement Hydrogen Inorganic chemistry Polyatomic ion chemistry.chemical_element Hydrogen atom Hydrogen atom abstraction Biochemistry Medicinal chemistry Ion Deuterium chemistry Physics::Atomic and Molecular Clusters Molecular Medicine Physics::Atomic Physics Instrumentation Spectroscopy Isopropyl |
| Zdroj: | Organic Mass Spectrometry. 16:125-128 |
| ISSN: | 1096-9888 0030-493X |
| Popis: | The formation of an [M + 1]+ ion and the fragmentation of isopropyl o-toluate have been investigated by the deuterium labelling technique and kinetic energy release measurements. The hydrogen atom involved in the [M + 1]+ ion formation does not originate from a specific part of the molecule, but from all parts. A small amount of hydrogen exchange between the secondary carbon atom in the isopropyl group and the carbon atoms in the tolyl group takes place prior to decomposition of the molecular ion into the m/z 136 ion by a McLafferty rearrangement. Either almost complete scrambling of the hydroxyl hydrogen atom and the methyl hydrogen atoms in tolyl group or an almost equilibrated exchange of the hydroxyl hydrogen atom with one of the remaining hydrogen atoms in tolyl group also takes place prior to the elimination of a water molecule from the intermediate m/z 136 ion. |
| Databáze: | OpenAIRE |
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