The reduction of 4-nitropyridine-N-oxide by benzophenone metalketyles and dianions

ORGN 108

Dilbar A. Turaeva, tdilbar@yahoo.com and Yu V. Kurbatov. Department of Chemistry, Samarkand State University, Nor Yakubov street 2/18, Samarkand, 703029, Uzbekistan
In the continuation of our works at the work out of diariloximethylation method of aromatic and heteroaromatic compounds by benzophenone metalketyles and dianions we found that at the interaction of 4-nitropyridine-N-oxide with benzophenone metalketyles and dianions, instead of diphenyloximethylation the nitro group reduction is occurs with 4,4'-azopyridine of N,N'- dioxide with high yield. Taking into consideration the data of polygraphical reduction of N-oxides, the reaction direction change can be explained by increasing of reduction ability of nitrocompound with participation of this group itself. The stage scheme of monoelectron reduction of 4-nitropyridine N-oxide till 4,4'-azopyridine N,N'-dioxide is represented in the work. The reaction study represent the easy method of final product obtain.