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Nitrobenzenes reductions, sodium borohydride

Tellurides (H2Te, NaTeH, PhTeH and Na2Te) are inexpensive and effective agents for reducing aromatic nitro compounds to hydroxylamines. Catalytic quantities of tellurium, in the presence of sodium borohydride, reduce p-substituted nitrobenzenes to N-arylhydroxylamines (equation 9). Mild reaction conditions, absence of side reactions and experimental simplicity are the main features of this reduction sequence. [Pg.366]

Sodium borohydride reduces disulfides to thiols, which can then be used to reduce nitro groups. Based on the redox properties of 1,2-dithiolane, lipoamide (17) was used for the selective reduction of mono-substituted nitrobenzenes to the corresponding anilines. Lipoamide (17) can also be immobilized on hydrophilic polymers such as polyvinylamine, polyethyleneimine and chitosan. These polymeric reducing catalysts can be recycled and are easy to separate from the reaction mixture. The system has been used to reduce nitroarenes to anilines. ... [Pg.369]

Reduction of nitrobenzenes to aniiines with bismuth chloride-sodium borohydride typical procedure... [Pg.398]

Reduction of 3-benzoylanthranil to the secondary alcohol [115 R = CH(OH)Ph] proceeds smoothly with sodium borohydride, oxidation back to the ketone being achieved in hot nitrobenzene containing a small amount of p-toluenesulfonic acid.142... [Pg.51]

See other pages where Nitrobenzenes reductions, sodium borohydride is mentioned: [Pg.301]    [Pg.336]    [Pg.304]    [Pg.72]    [Pg.653]    [Pg.198]   
See also in sourсe #XX -- [ Pg.414 ]



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