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Thermospectrophotometric analysis of alkylamines utilizing ion association with tetrabromophenolphthalein ethyl ester

T Sakai1, S Watanabe, S Yamamoto

  • 1Department of Applied Chemistry, Aichi Institute of Technology, Yachigusa, Yakusa-cho, Toyota 470-03, Japan, and Department of Chemistry, Faculty of Science, Okayama University, Tsushima, Okayama 700, Japan.

Analytical Chemistry
|June 7, 2011
PubMed

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In mass spectroscopy, amines undergo fragmentation to give parent ions with odd molecule weights. This observed mass spectrum follows the nitrogen rule; a molecule with an odd number of nitrogen atoms produces a molecular ion with an odd molecular weight. Amines undergo fragmentation through α cleavage, producing nitrogen-containing cations—iminium ions—and alkyl radicals. Mass spectra of aromatic and cyclic aliphatic amines exhibit strong molecular ion peaks, but acyclic aliphatic amines show...
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Basicity of Heterocyclic Aromatic Amines

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