ISSN:
0030-493X
Keywords:
Chemistry
;
Analytical Chemistry and Spectroscopy
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
Notes:
The isomeric 3,4-diethylmuconic acid dimethyl esters behave differently under electronimpact. Methanol elimination from the molecular ion is one of the most important processes in the trans, trans diester. In the cis, cis and cis, trans isomers, however, the loss of a methoxyl radical from the molecular ion occurs to a much greater extent than elimination of methanol. This distinctive behaviour is interpreted in terms of different distances between the methoxy groups and the allylic hydrogen atoms in the geometrical isomers. Other differences in the mass spectra of the isomers are reported and discussed.
Additional Material:
3 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/oms.1210040148
