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Electron impact mass spectrometry of 2-hydroxymethyl-3,4,5,6,7,8-hexahydro-2 H-1-benzopyran-5-ones. The unusual presence of [MH3O]+ species in the fragmentation pattern of 4-phenyl derivatives

✍ Scribed by Pierfrancesco Bravo; Calimero Ticozzi; Pietro Traldi

Publisher: John Wiley and Sons
Year: 1982
Tongue: English
Weight: 274 KB
Volume: 17
Category: Article
ISSN: 1076-5174
DOI: 10.1002/oms.1210170909

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✦ Synopsis

Abstract

The mass spectrometric behaviour of some 2‐hydroxymethyl‐3,4,5,6,7,8‐hexahydro‐2__H__‐1‐benzopyran‐5‐ones is described and discussed with the aid of exact mass measurements, linked scans, labelling experiments and low electron energy measurements. The unusual presence of abundant [MH~3~O]^+^ species in the mass spectra of 4‐phenyl substituted compounds is discussed in detail and a mechanism is proposed.

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