𝔖 Bobbio Scriptorium
✦   LIBER   ✦

Mass spectra of substituted pyrrolidine-N-oxyl radicals

✍ Scribed by Gyula Jerkovich; H. Olga Hankovszky; Kálmán Hideg

Publisher
John Wiley and Sons
Year
1990
Tongue
English
Weight
494 KB
Volume
25
Category
Article
ISSN
1076-5174

No coin nor oath required. For personal study only.

✦ Synopsis

Electron impact m a s spectra of 65 pyrrolidine-N-oxyl derivatives have been assigned on a 'peak-to-subgraph' basis. On average, 50% of the total ion current is represented by structurally significant fragments associated with the nitroxide group. Secondary fragmentation is, as a rule, of a minor importance (30%), and fragments due to functional groups other than N O seldom contribute more than 10% of the total ion current. An enhanced specificity of fragmentation is observed when one or more of the 2,2,5,5-methyl groups is replaced by a longer aliphatic chain or an aromatic group.

📜 SIMILAR VOLUMES

Mass spectra of N-substituted cantharidi
Mass spectra of N-substituted cantharidinimides
✍ Pen-Y. Lin; Shaw-T. Lin; David W.-M. Liang 📂 Article 📅 2004 🏛 John Wiley and Sons 🌐 English ⚖ 116 KB

## Abstract The mass spectra of a series of __N__‐substituted cantharidinimides were examined. The feature of this series compounds is a sequential double hydrogen transfer from the oxabicycloheptane unit to either the carbonyl group of the succinimide unit or the nitrogen atom of the pyridyl or th