Mass spectrometric study of 2-organylamino- and 2-organyloxy-1-propyl-1,2-azaborolidines
The stability of the molecular ion and fragmentation of 2-organylamino- and 2-organyloxy-1-propyl-1,2-azaborolidines is determined by the nature of the R substituent in the NHR and OR groups on the boron atom. The main fragmentation process is β-rupture in the alkyl substituent on the endocyclic nitrogen atom.
Alkylamino groups on the boron atom stabilize the boron-containing ring. The alkoxy group destabilizes the boron-containing ring, facilitating its decomposition under electron impact.
A method is proposed for recording mass spectra of compounds unstable toward oxygen and moisture in air.
KeywordsOxygen Nitrogen Mass Spectrum Boron Nitrogen Atom
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