Addition reactions of heterocyclic compounds. Part XXXII. The mass spectra of some azepines obtained from dimethyl acetylenedicarboxylate
Journal of the Chemical Society C: Organic Pub Date: DOI: 10.1039/J39680000383
Abstract
The fragmentation patterns of a number of fused azepines possessing four ester groups have been measured. When the arrangement of these groups permitted, expulsion of methyl acrylate and the formation of an indolizinium-type cation occurred, but where a corresponding expulsion of methyl maleate or fumarate was the only possibility it did not take place.
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Journal Name：Journal of the Chemical Society C: Organic
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CAS no.: 89640-58-4
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