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S. A. Yamashkin, P. B. Terent’ev, M. A. Yurovskaya
Features of
mass-spectra of substituted pyrroloquinolines
Abstract
The results of
mass-spectrometric studies of a series of differently substituted isomeric
pyrrolo [2,3-g], [3,2-f], [3,2-g],
[2,3-f] quinolines are presented and analyzed. It has been
established that the angularly constructed pyrroloquinolines with volume peri-substituents
are less stable under the action of an electron impact than the corresponding
isomers of the linear structure. The difference in the values of WM depends on the steric requirements of the peri-located
groups in the angular systems. The data obtained make it possible to identify
the structure of the resulting isomeric tricyclic heterosystems. A scheme for
the mass spectrometric decomposition of methyl-, phenyl-, methoxy-, hydroxyl-,
ethoxycarbonyl-substituted pyrroloquinolines.
Key words:
mass-spectrometric decomposition, pyrrolo[2,3-g]quinolines,
pyrrolo[3,2-f] quinolines, pyrrolo[3,2-g]quinolines,
pyrrolo[2,3-f]quinolines.
Copyright (C) Chemistry Dept., Moscow State University, 2002
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