Protonation sites on unsymmetrical 1,3-d
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Anita H. Lewin; Jason P. Burgess; Guobin Sun; Louise D. Fudala
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Article
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1999
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John Wiley and Sons
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English
β 74 KB
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The proton NMR spectra of the isomeric 3Λ-and 3Λ-aminotropanes were recorded in aqueous solution over the pH range 2-14 and the resonances of both diamines were completely assigned. The pH dependence of the chemical shifts of the protons Λto the amino groups was used to determine which of the amino