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Mass Spectrometry of Substituted 1H,6H-Pyrano[2,3-c]pyrazol-6-ones
Corresponding Author(s) : Muhammad Naeem Khan
changwani_1@yahoo.com
Asian Journal of Chemistry,
Vol. 25 No. 17 (2013): Vol 25 Issue 17
Abstract
The mass spectra of some C- and N-alkyl and aryl substituted 1H,6H-pyrano[2,3-c]pyrazol-6-ones are presented. The fragmentation is initiated by the elimination of CO followed by a loss of hydrogen, rearrangement and then loss of a RCN group. Parallely a disproportionation gives RN2 which loses N2 to give the aromatic ion (m/z 77 or 91).
Keywords
Fragmentation
1H,6H-Pyrano[2,3-c]pyrazol-6-ones
Disproportionation
Asif, N., Chaudhry, F., Naeem Khan, M., Guerra Cosenza, A., Penant Ellis, G., Ain Khan, M., … Aslam, N. (2013). Mass Spectrometry of Substituted 1H,6H-Pyrano[2,3-c]pyrazol-6-ones. Asian Journal of Chemistry, 25(17), 9639–9642. Retrieved from https://asianpubs.org/index.php/ajchem/article/view/8571
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