Herein, a practical and green method for the synthesis of azobenzenes and ketones
is reported using nitro compounds/alcohols as oxidant/reductant pairs under basic
conditions. Alcohols and nitro compounds are oxidized/reduced in the absence of any
metal catalysts under mild conditions and good yields of the corresponding ketones
and azobenzenes are achieved selectively. In addition, the alcohols can even be oxidized
with KNO3 or NaNO2.
Key words
nitroarenes - azobenzenes - alcohols - ketones - oxidation - reduction