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The mass spectra of some chromans
Author(s) -
Middleditch Brian S.,
Macnicol David D.
Publication year - 1976
Publication title -
organic mass spectrometry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.475
H-Index - 121
eISSN - 1096-9888
pISSN - 0030-493X
DOI - 10.1002/oms.1210110218
Subject(s) - heteroatom , mass spectrum , thio , oxygen atom , charge (physics) , chemistry , ion , spectral line , oxygen , atom (system on chip) , medicinal chemistry , stereochemistry , crystallography , organic chemistry , molecule , physics , ring (chemistry) , quantum mechanics , astronomy , computer science , embedded system
The mass spectra of 4‐ p ‐hydroxyphenyl‐2,2,4‐trimethylchroman and of its thia, selena and sulphonyl analogues are reported and discussed. Formal charge localization on the oxygen atom of the oxo compound is reflected in the production of an abundant [M ‐ 15] + ion. Lack of charge location on the heteroatom of the seleno compound leads to a retro‐Diels‐Alder reaction. The thio compound exhibits intermediate behaviour, but charge localization on the oxygen atoms is preferred in the sulphone.