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Electron impact mass spectrometry of some 3-substituted 1,2,3,4-tetrahydroisoquinolines

✍ Scribed by Adriana F. Ibañez; Graciela Y. Moltrasio Iglesias


Publisher
John Wiley and Sons
Year
1991
Tongue
English
Weight
159 KB
Volume
26
Category
Article
ISSN
1076-5174

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✦ Synopsis


956, (1 11 3) Capital Federal, Argentina

The electron impact mass spectral fragmentation of a series of 3-substituted-1,2,3,4-tetrahydroisoquinolinc~ are reported. The principal fragmentation modes of these compounds comply with the main generalizations reacbed earlier with simpler systems. Complete aromatizations to form the isoquinolinium ion are observed only for compounds 5 and 7 and no retro-Diels-Alder cleavage is observed when R' is a benzyl goup.


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Electron impact ionization mass spectra
✍ Esa Mäki; Kalevi Pihlaja; Imre Huber; Ferenc Fülöp; Gábor Bernáth; Pirjo Vainiot 📂 Article 📅 1993 🏛 John Wiley and Sons 🌐 English ⚖ 349 KB

## Abstract The electron impact ionization mass spectra of dipyrido [1,2‐__a__:4,3‐__d__]pyrimidinones are strongly influenced by the degree of aromaticity of the fused rings. The molecular ions of the compounds are fairly stable. The main routes of fragmentation involve formation of the [M – H]^+^