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  1. No Access

    Article

    Mass-spectrometric study of the cleavage products of 3,4-epoxytetrahydropyrans by amines

    Only 4-methyl-3-amino-4-hydroxytetrahydropyrans are formed when the oxide ring of 4-methyl-3,4-epoxytetrahydropyran is opened by ammonia and amines. The structural isomers of 4-amino-3-hydroxy-and 3-amino-4-hy...

    N. S. Vul'fson, V. N. Bochkarev… in Bulletin of the Academy of Sciences of the… (1971)

  2. No Access

    Article

    The effect of the relative location of the double bond and the alkoxy group on the mass-spectrometric behavior of alkoxydihydropyranes

    The mass spectra ofthree 6-alkoxy-Δ3-dihydropyranes and of three 6-alkoxy-Δ2-dihydropyranes have been studied. As distinct from the previously studied 2-alkoxy-Δ3-dihydropyranes, the dominant fragmentation patter...

    N. S. Vul'fson, V. N. Bochkarev… in Bulletin of the Academy of Sciences of the… (1970)

  3. No Access

    Article

    A mass-spectrometric investigation of derivatives of Δ3-dihydropyrane

    The mass spectra of eleven derivatives of Δ3-dihydropyrane have been recorded and their basic fragmentation paths have been studied.

    N. S. Vul'fson, G. M. Zolotareva… in Bulletin of the Academy of Sciences of the… (1970)

  4. No Access

    Article

    Mass spectrometric study of desoxyamino sugars

    The mass spectra of ten 3,4-didesoxy-3-amino sugars have been studied. A novel type of ring cleavage was detected in the molecular ions of these compounds, which had not been encountered in previously studied ...

    N. S. Vul'fson, G. M. Zolotareva… in Bulletin of the Academy of Sciences of the… (1970)