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Ortho effect in the mass spectrometric behaviour of N(pyrimidin-4-yl)aminobenzoic acids and their methyl esters

✍ Scribed by Adam S. Plaziak; Jaroslaw Spychala; Hanna Wójtowicz; Jerzy J. Langer; Halina Thiel-Pawlicka; Krzysztof Golankiewicz

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
410 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

Ortho-, meta-and para-isomers of N-(pyrimidin-4-yl)aminobenzoic acid and their methyl esters were investigated by electron impact mass spectrometry. Their fragmentation was found to be strongly dependent on the position of the substituent in the aminobenzoic moiety. Two different kinds of ortho effect were studied and confirmed with the aid of deuterium-labelled derivatives.

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