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Comparative studies of electron-impact and thermolytic fragmentation. I. Aromatic anhydrides

✍ Scribed by M.P. Cava; M.J. Mitchell; D.C. DeJongh; R.Y. Van Fossen

Book ID
104250324
Publisher
Elsevier Science
Year
1966
Tongue
French
Weight
213 KB
Volume
7
Category
Article
ISSN
0040-4039

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✦ Synopsis

Recent reports on the generation of sryne intermediates by the thermolysis of phthalic anhydride' and pyrazine-2,3-dicsrboxylic anhydride' prompt us to disclose some of our own work which, though independently initiated, has progressed along similar lines. The mass spectrum of phthalic anhydride has an intensepeakat & '76 (Eq. l), resulting from the loss of carbon dioxide and carbon monoxide, in that order. The & 76 peak corresponds to [CsHd]+', which fragments further by elimination of acetylene to produce a fragment of & 50, [CdHr]+'; the & 76 peak has been at-

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