MASS-SPECTROMETRIC CHARACTERISTICS OF SOME PERTRIMETHYL-SILYLATED DESULFOGLUCOSINOLATES

Article abstract of DOI:10.1016/0040-4020(82)80172-5

The electron impact and chemical ionisation mass spectra of twelve pertrimethylsilyl derivatives of desulfoglucosinolates deriving from naturally occurring parent compounds are described and discussed.Series of characteristic ions, mostly comprising molecular ions, render mass spectrometry of such derivatives, in combination with gaschromatographic separation, a useful tool in the identification of known and novel glucosinolates.The scope of the method is wide though limitations exist.Thus, the extensive series of naturally occuring glucosinolates possessing methylsulphinyl-substituted side-chains undergo decomposition on attempted gas chromatography of their pertrimethylsilylated desulfoglucosinolate derivatives.