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Mass spectrometric studies–VI: Aziridines

✍ Scribed by Q. N. Porter; R. J. Spear

Publisher
John Wiley and Sons
Year
1970
Tongue
English
Weight
886 KB
Volume
3
Category
Article
ISSN
1076-5174

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✦ Synopsis

Abstract

The mass spectra of C‐alkylaziridines show that generally β‐cleavage is the most important fragmentation, although α‐cleavages also occur as do γ‐, and δ‐ and ϵ‐cleavages in appropriate examples. A surprising rearrangement of the β‐cleavage ions has been explained as the result of a four‐centre cyclization followed by fragmentation. Other decompositions occur via transannular cleavages with and without hydrogen transfer. α‐Cleavage appears to be the most important fragmentation of N‐alkylaziridines. N‐Phenylaziridine shows very marked 1,2‐phenyl‐migration before fragmentation.

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