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A study of the ortho effects and rearrangement processes in the mass spectra of 2-arylaminothiazine and -thiazoline derivatives

✍ Scribed by Gy. Bujtás; J. Tamás

Publisher
John Wiley and Sons
Year
1976
Tongue
English
Weight
684 KB
Volume
11
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The behaviour of the title compounds under electron impact has been investigated using low and high resolution mass spectrometry and partial ^15^N and D labelling. A number of ions produced by rearrangement were observed. Abundant ions are formed by intramolecular ortho substitution reactions (cyclizations), as demonstrated by energetic and kinetic considerations and by studying the decomposition pathways of these ions. The ortho substitution processes involve loss or rearrangement of an ortho group of the aromatic ring.

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