1974
DOI: 10.1002/oms.1210080139
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Abstract: The mass spectra of some N-methylpyridinium, quinoliniurn, isoquinolinium and phenanthridinium salts (R+X-)* are analyzed (X-= Ior Clod-). For X-= I-, thermal decomposition gives rise mainly to the superimposed spectra of CHJ and the free base. Hence, iodide salts cannot be determined specifically by their mass spectra. When an a-methyl group is present, e.g. 2methylpyridinium methiodide, elimination of HI becomes an important thermal process. For X-= C10,-, the same pattern is observed, but in addition a gene… Show more

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Cited by 22 publications
(5 citation statements)
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“…As for the m / z 80 ion above, the fragment at m / z 79 undergoes further loss of HCN. The latter has been confirmed by Salzmans and van Binst, who described the observation of metastable ions corresponding to the transition m / z 79 → 52 for 1‐methyl‐pyridinium iodide 17…”
Section: Resultsmentioning
confidence: 55%
“…As for the m / z 80 ion above, the fragment at m / z 79 undergoes further loss of HCN. The latter has been confirmed by Salzmans and van Binst, who described the observation of metastable ions corresponding to the transition m / z 79 → 52 for 1‐methyl‐pyridinium iodide 17…”
Section: Resultsmentioning
confidence: 55%
“…The precursor of 6 is commercially available 1,4-dimethylpyridinium iodide. These were treated with aqueous Ag 2 CO 3 EI and CI data were obtained using a Finnigan-MAT (San Jose, CA, USA) 1020B GC/MS, with a quadrupole mass filter. This instrument, its operation and the methods of data reduction and assignment of peaks to various products of thermal reaction are described elsewhere.…”
Section: Methodsmentioning
confidence: 99%
“…The resulting electron ionization (EI) spectra have been reported. 3 By thermally decomposing the chloride salts of several substituted 1-aminopyridiniums, EI mass spectra of the conjugate bases, 1-iminopyridinium betaines have been obtained. 4 For 2-and 4-aminopyridines, the aromatic amino tautomer predominates rather than the pyridone-imine.…”
mentioning
confidence: 99%
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“…Certain aromatic ammonium salts, however, may undergo other routes of pyrolytic degradation. Reduction to the corresponding neutral dihydropyridine was observed upon heating some pyridinium salts, in addition to the dealkylation and Hoffmann elimination reactions (2)(3)(4)(5)(6).…”
Section: Introductionmentioning
confidence: 99%