Ortho effect in the mass spectrometric behaviour of N(pyrimidin-4-yl)aminobenzoic acids and their methyl esters |
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| Authors: | Adam S Plaziak Jaroslaw Spychala Hanna Wjtowicz Jerzy J Langer Halina Thiel-Pawlicka Krzysztof Golankiewicz |
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| Institution: | Adam S. Plaziak,Jaroslaw Spychala,Hanna Wójtowicz,Jerzy J. Langer,Halina Thiel-Pawlicka,Krzysztof Golankiewicz |
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| Abstract: | 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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