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Mass spectrometry and organic analysis—XIII. The mass spectra of doubly unsaturated carbonyl compounds

✍ Scribed by A. F. Thomas; B. Willhalm; Regula Müller

Publisher
John Wiley and Sons
Year
1969
Tongue
English
Weight
596 KB
Volume
2
Category
Article
ISSN
1076-5174

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✦ Synopsis

In 2,6-di-unsaturated carbonyl compounds, two successive, site-specific hydrogen transfers are necessary to account for the loss of carbon atoms 1 , 2 , 3 and 4, together with one hydrogen from C-8. The deuterated methyl geranate required for this study was readily converted to pseudo-ionone, in which a similar fission was shown to occur. Previous predictions about the /?-ionone mass spec-* For Part XII, see Ref. 1.

We are very grateful to D r R. Teranishi for giving us the mass spectra of natural G(-and /?-~inensal.~,~ The spectra quoted here were measured on our own instrument, but are not appreciably different from those of the American group. Note also that the prefixes a-and /?-diKer from the original designations to accord with a-and /?-farnesener.

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