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Studies of cyclic acetals. XXIII —low resolution, electron impact mass spectra of some 6,8‐dioxa‐3‐thiabicyclo[3.2.1]octanes and related 2‐acetoxy, 3‐oxo and 3,3‐dioxo derivatives
Author(s) -
Calinaud Pierre,
Gelas Jacques,
Horton Derek,
Wander Joseph D.
Publication year - 1978
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.1210130803
Subject(s) - mass spectrum , fragmentation (computing) , octane , chemistry , ion , sulfur , low resolution , electron ionization , oxygen atom , decomposition , spectral line , crystallography , high resolution , medicinal chemistry , molecule , organic chemistry , physics , history , archaeology , astronomy , computer science , ionization , operating system
Low resolution, electron impact mass spectra of 6,8‐dioxa‐3‐thiabicyclo[3.2.1]octane and eight C ‐methyl or ‐phenyl derivatives are, in the main, similar to those of the corresponding 3,6,8‐trioxa homologs. Oxygenation on C‐2 or on the sulfur atom decreases the number of prominent fragments in the scheme of decomposition and apparently affords greater opportunity for formation of small, stable, acylium ions, but the added oxygen atoms generally do not direct major new modes of fragmentation.