Tandem Mass Spectrometric Studies on the [C_5H_8O_2]^<+・> Ions from Angeric Acid and Tigric Acid Esters

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概要

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• Collision activated dissociation (CAD) spectra and metastable ion (MI) spectra of the [C5H8O2]+· ions from various esters of angeric acid and tigric acid have been studied. The [C5H8O2]+· ions formed upon the McLafferty rearrangement from the precursor esters of these acids were identified as the same structures of the molecular ions directly produced by electron impact ionization of angeric acid and tigric acid respectively on the basis of CAD spectral evidence. The cis-trans isomerization of the acids can occur during ionization or subsequent fragmentation of the lower internal energy ions which proceed via unimolecular metastable decompositions. We have provided an example that the isomeric ions can be distinguished by the ion abundance enhancement by high energy collisional activation on the specific fragmentation reactions of the [C5H8O2]+· ions.

• 日本質量分析学会の論文
• 1999-10-01

著者

• Tajima Tadakuni

  Toray Research Center, Inc.

• Sakai Ikuo

  Toray Research Center Inc.

• Tajima Tadakuni

  Toray Research Center Inc.

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• Structural Study of Intermediate Ions by Kinetic Energy Release and Thermochemical Consideration: [C7H8N]+ Ions from Toluidine Derivatives
• Tandem Mass Spectrometric Studies on the [C_5H_8O_2]^ Ions from Angeric Acid and Tigric Acid Esters
• Tandem Mass Spectrometry of Low Abundance Natural Isotope Peaks A Facile Study of the Fragmentation Pathways

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