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4-Alkoxycarbonyl, 4-alkylthiocarbonyl and 5-alkoxycarbonyloxy derivatives of 1-substituted-3-methylpyrazol-5-ones

✍ Scribed by Rodolfo López; Gerardo León; Alfonso Oliva

Book ID
112131337
Publisher
Journal of Heterocyclic Chemistry
Year
1995
Tongue
English
Weight
232 KB
Volume
32
Category
Article
ISSN
0022-152X

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Mass spectra of some 1-(6′-substituted-4
Mass spectra of some 1-(6′-substituted-4′-methyl-2′-quinolyl)-3-methylpyrazol-5-ols and their 4-substituted analogues
✍ Shiv P. Singh; Radhe K. Vaid; Om Prakash 📂 Article 📅 1987 🏛 John Wiley and Sons 🌐 English ⚖ 255 KB

Electron impact induced fragmentation of some l-(6'-substituted-4'-methyl-2'-quinolyl)hylpyrazol-5-ols follows a route where the pyrazole moiety is preferentially cleaved with successive losses of two moieties of 41 u. High-resolution measurements have established that the first loss is due to the C