| Autor: |
Potts, K. T., Singh, U. P. |
| Zdroj: |
Organic Mass Spectrometry; 1970, Vol. 3 Issue 4, p433-438, 6p |
| Abstrakt: |
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. [ABSTRACT FROM AUTHOR] |
| Databáze: |
Complementary Index |
| Externí odkaz: |
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