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The mass spectra of the trimethylsilyl esters of acetyl, schiff base and isothiocyanate derivatives of some aminoalkylphosphonic acids
Author(s) -
Harvey D. J.,
Horning M. G.
Publication year - 1974
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210091002
Subject(s) - trimethylsilyl , chemistry , mass spectrum , isothiocyanate , mass spectrometry , schiff base , medicinal chemistry , deuterium , base (topology) , ion , organic chemistry , chromatography , stereochemistry , mathematical analysis , mathematics , physics , quantum mechanics
Trimethylsilyl esters of acetyl, Schiff base and isothiocyanate derivatives of a series of aminoalkylphosphonic acids were prepared for the purpose of characterizing these phosphorus compounds by combined gas chromatography and mass spectrometry. The mass spectra of these derivatives were investigated by means of high resolution mass measurments and deuterium labeling. Ions characteristic of the presence of the trimethylsilylphosnate group were observed at m / e 121, 195, 211 and 225 to 227 in the spectra of all the derivatives. Several ions produced by interaction between the trimethylsilyl group and the derivatized amino function were present, particularly in the spectra of the acetate derivatives ([M — 56] + , [M — R] + and [M — 153] + , where R is the side chain attached to C‐1), and the isothiocynate derivatives ( m / e 268, 253, 241, 190 and 116).