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Electron impact behaviour of trans-4-benzoylamino-2H-1-benzopyran-3-ols: Evidence for an oxygen migration with loss of a benzopyranone

✍ Scribed by John M. Evans; Andrew J. Organ; Jonathan L. Sims

Publisher: John Wiley and Sons
Year: 1995
Tongue: English
Weight: 287 KB
Volume: 30
Category: Article
ISSN: 1076-5174
DOI: 10.1002/jms.1190300712

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✦ Synopsis

Abstract

Certain abundant peaks in the electron impact mass spectra of a series of trans‐4‐benzoylamino‐2__H__‐1‐benzopyran‐3‐ols involve the formation of a substituted N‐alkylated benzonitrile ion by a mechanism involving migration of oxygen, in a postulated four‐centre skeletal rearrangement, leading to the loss of a benzopyranone. The presence of a small range of differing substituents at three locations in this series was studied for their effects on this proposed mechanism.

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