Mass spectra of 1,2,4-triazoles—II: Alkyl 1,2,4-triazoles |
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Authors: | A J Blackman J H Bowie |
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Abstract: | The mass spectra of monomethyl 1,2,4-triazoles contain fragment ions produced by specific cleavage of the heterocyclic ring. A major fragmentation from many molecular ions involves the elimination of HCN, but loss of N2 is either very small or completely absent. No N or H scrambling occurs within the triazole ring system, as evidenced by labelling studies. The loss of a hydrogen atom from the molecular ions of 3-alkyl-1,2,4-triazoles (alkyl ? C2H5) originates from hydrogens attached to the β carbon and nitrogen atoms. |
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