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Electron impact-induced decomposition of some substituted 7-ethoxycarbonylpyridopyrrolidenequinolines

✍ Scribed by Adam S. Plaziak; Tomasz Girek; Wanda Śliwa

Publisher
John Wiley and Sons
Year
1992
Tongue
English
Weight
241 KB
Volume
27
Category
Article
ISSN
1076-5174

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✦ Synopsis

The electron impact ionization mass spectrometric behaviour of three cycloadducts of 4,&benzo[ Llnaphthyridinum ethoxycarbonylmethylide with acrylonitrile, ethyl acrylate and diethyl maleate was studied with the aid of exact mass measurements and metastable transitions. The study showed that the electron impact-induced decomposition of substituted pyridopyrrolidenequinolines occurs exclusively on the aliphatic fivemembered ring.

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Electron impact-induced fragmentation of
Electron impact-induced fragmentation of some aminonitropyridines
✍ Ryszard Gawinecki; Danuta Rasała 📂 Article 📅 1991 🏛 John Wiley and Sons 🌐 English ⚖ 369 KB

The fragmentation behaviour of 18 vicinally substituted aminonitropyridines was studied under electron impact conditions. The decomposition patterns were found to be strongly dependent on the position of substituents The formation of the am analogue of carbazole seems phenylamioopyridine.