A. S. Plaziak, J. Spychała, K. Golankiewicz
Dec 1, 1991
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0
Influential Citations
3
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Journal
Journal of Mass Spectrometry
Abstract
N-(pyrimidin-2-yl)-glycine, -alanine and -phenylalanine (1-3) and their methyl esters (4-6) were investigated using electron impact (EI) mass spectrometry. The results showed that EI-induced decomposition occurs on the carboxylic group or involves the loss of R 2 OH. In contrast to earlier investigations on N-(pyrimidin-4-yl)amino acids, elimination of water (in 1-3) or methanol (in 4-6) was found to be of EI-induced nature. The loss of . COOH from M +. of ester 4 suggests the occurrence of a skeletal rearrangement leading to the isomeric N-methylamino acid