From: Jonas Nilsson (jonni$##$ifm.liu.se)
Date: Thu Dec 14 2000 - 08:14:25 EST
A short summary of all answers to my question. Thank you for your help.
From: Manuel Toennis (mt$##$org.chemie.tu-muenchen.de)
common byproducts (for the example of nitrobenzene!) are azo-benzene
(Ph-N=N-Ph)
or azo-oxo-benzene (Ph-N=N(O)-Ph). this has something to do with the
pH-value,
but dont ask me for details.
>From Viesturs Lusis (lusis$##$osi.lv)
What about Ar-NO2 --> Ar-NH-OH ?
>From Jim Sims (jsims$##$ucrac1.ucr.edu)
In some metal reductions of aromatic nitro compounds you can get azo
compounds which are essentially dimers through nitrogen. These may be
generated via intermediates such as nitroso or hydroxylamine compounds.
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