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Unusual neutral and radical losses in 2′-substituted N-phenylanthranilic acids on electron impact

✍ Scribed by D. V. Ramana; R. Srinivas; P. Mahalakshmi

Publisher: John Wiley and Sons
Year: 1991
Tongue: English
Weight: 424 KB
Volume: 26
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210260423

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✦ Synopsis

Abstract

Unusual expulsions of [H~2~O + CO~2~] from the M^+^˙ of N‐(o‐carboxyphenyl)anthranilic acid, [H~2~O + CH~2~O] from the M^+^˙ of N‐(o‐methoxyphenyl)anthranilic acid and [H~2~O + ˙NO~2~] from the M^+^˙ of N‐(o‐nitrophenyl) anthranilic acid were observed under electron impact conditions. These processes are stepwise in the corresponding para‐substituted N‐phenylanthranilic acids. The proposed fragmentation pathways and their mechanisms are supported by B/E linked‐scan spectra, collision‐activated decomposition (CAD)–mass‐analysed ion kinetic energy (MIKE) spectra, high‐resolution data, deuterium labelling and chemical substitution.

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