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Mass-spectrometric distinction of linear and angular 3′,4′-dihydroxy-substituted dihydropyranocoumarins and their derivatives

✍ Scribed by P. I. Zakharov; P. B. Terent'ev; G. K. Nikonov; L. G. Avramenko


Book ID
112373004
Publisher
Springer
Year
1977
Tongue
English
Weight
380 KB
Volume
13
Category
Article
ISSN
0009-3130

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Mass spectrometry of 3-substituted 4-hyd
✍ P. B. Terent'ev; N. P. Lomakina; A. N. Kost 📂 Article 📅 1976 🏛 John Wiley and Sons 🌐 English ⚖ 503 KB

## Abstract Under electron impact, 3‐aryl‐4‐hydroxyisoquinolines form [M – H]^+^, [M – CO]^+^ and [M – H – CO]^+^ ions with a subsequent elimination of HCN or CH~3~CN. A cyclic structure for the [M – H]^+^ ion is suggested. The primary act of fragmentation of the corresponding methyle ether derivat