Showing papers by "Asher Mandelbaum published in 1975"

The dissimilarity between the electron-impact and photochemical or thermal behaviour of some methyl cyclobut-3-ene-1,2-dicarboxylates and muconates

Abstract: Comparison of the mass spectral behaviour of the dimethyl esters of the epimeric (cis- and trans-) cyclobut-3-ene-1,2-dicarboxylic acids and the isomeric muconates (cis, cis-, cis, trans- and trans, trans-) and some substituted analogues shows that no correlation exists between the electron-impact-induced fragmentation and the predicted photochemical or thermal transformations in these systems. The comparison involved fragmentation patterns (supported by deuterium labelling), metastable transitions, and also kinetic energy release in the field free region.