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Lee, D.-U. ; Mayer, K. K. ; Wiegrebe, Wolfgang

Mass Spectrometric Investigations of Phenylacetic Acid Derivatives, III: Fragmentation of meta- and para-substituted Phenylacetamides after Electron Impact

Lee, D.-U., Mayer, K. K. and Wiegrebe, Wolfgang (1988) Mass Spectrometric Investigations of Phenylacetic Acid Derivatives, III: Fragmentation of meta- and para-substituted Phenylacetamides after Electron Impact. Archiv der Pharmazie 321, pp. 315-320.

Date of publication of this fulltext: 07 Jul 2010 05:12
Article
DOI to cite this document: 10.5283/epub.15691


Abstract

The electron impact induced fragmentations of m- and p-substituted phenylacetamides and N,N-dimethyl-phenylacetamides 1-14 were investigated and compared with the o-analogues. A l l m- and p-substituted amides yield molecular ions with high relative intensities which do not lose their meta- and para-substituents. Loss of HNCO from M + * is dominant in the prim, amides, whilst for the tert. ...

The electron impact induced fragmentations of m- and p-substituted phenylacetamides
and N,N-dimethyl-phenylacetamides 1-14 were investigated
and compared with the o-analogues. A l l m- and p-substituted amides
yield molecular ions with high relative intensities which do not lose their
meta- and para-substituents. Loss of HNCO from M + * is dominant in the
prim, amides, whilst for the tert. amides the classical benzyl cleavage is the
most favourable fragmentation pathway.

Die Elektronenstoß-induzierten Fragmentierungen der m- und p-substituierten
Phenylacetamide bzw. N,N-Dimethyl-phenylacetamide 1-14 wurden
untersucht und mit dem Verhalten ihrer o-substituierten Analogen
verglichen. Alle m- und p-substituierten Amide zeigen M + ' mit hoher relat.
Intensität und spalten die m- bzw. p-Substituenten nicht ab. Die prim.
Amide verlieren bevorzugt H N C O aus M + " , während in den tert. Amiden
klassische Benzylspaltung vorherrscht.


Involved Institutions


Details

Item typeArticle
Journal or Publication TitleArchiv der Pharmazie
Publisher:John Wiley & Sons
Volume:321
Page Range:pp. 315-320
Date1988
InstitutionsChemistry and Pharmacy > Institute of Pharmacy > Alumni or Retired Professors > Prof. Wiegrebe
Dewey Decimal Classification500 Science > 540 Chemistry & allied sciences
StatusPublished
RefereedYes, this version has been refereed
Created at the University of RegensburgUnknown
URN of the UB Regensburgurn:nbn:de:bvb:355-epub-156911
Item ID15691

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