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Electron Impact Induced Loss of C-5/C-8 Substituents of 1,2,3,4-Tetrahydroisoquinolines, VI, Synthesis and Mass Spectrometric Fragmentation of Dihydroindole Derivatives

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Knefeli, F. ; Mayer, K. K. ; Wiegrebe, Wolfgang ; Schlunegger, U. P. ; Lauber, R.
Date of publication of this fulltext: 08 Jul 2010 04:52


The syntheses of the C-4 substituted dihydroindoles 25, 31 (scheme 7), and 36 (scheme 8) are described. - The CID MIKE spectrum in the 2. field free region (2. FFR) of m/z 146 from 25 is very similar to but not identical with that of m/z 146 from the C-5 substituted tetrahydroisoquinolines 3,6, 7, and 8 (scheme 2), so supporting our hypothesis of a rearrangement in M+. of ...


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