ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
Pyrazolo[1,5-a]pyridine undergoes fragmentation upon electron-impact by loss of HCN or C2H2N·. In the 2,3-dimethyl derivative loss of HCN and CH3CN were both observed from the [M - 1]+ ion and, in the 3-methyl-2-phenyl derivative, loss of PhCN occurred from the corresponding [M - 1]+ ion. Loss of methyl and phenyl radicals was also observed. In 3-acetyl-2-methyl and 3-benzoyl-2-phenyl derivatives, characteristic losses of the CH3CO· and PhCO· groups were noted. The introduction of a 7-methyl substituent into the six-membered ring had little effect on the fragmentation pattern.
Additional Material:
4 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210030403
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