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2001 azo compounds azo compounds (diazo compounds, triazenes etc.) (benzene compounds) Q 0160 05 -077 Reactions of Aromatic Nitro Compounds. Part 73. Reaction of Anionic m-Dinitrobenzene σ-Complexes with Arenediazonium Salts -[replacement of one nitro group in m-dinitroarenes (I) and (IV) to furnish the corresponding nitroazoarenes (III) and (V)/(VI), respectively]. -(ATROSHCHENKO, YU. M.; BLOKHINA, N. I.; SHAKHKEL'DYAN, I. V.; GRUDTSYN, YU. D.; GITIS, S. S.; BORBULEVICH, O. YA.; BLOKHIN, I. V.; KAMINSKII, A. YA.; SHISHKIN, O. V.; ANDRIANOV, V. F.; Russ. J.

Reaction of NitrophenyldiazoniumTetrafluoroborates with the Anionic . sigma.-Complex of 9-Nitroanthracene. --(BLOKHIN, I. V.; ATROSHCHENKO, YU. M.; KAMINSKII, A. YA.; GITIS, S. S.; GRUDTSYN, YU. D.; BLOKHINA, N. I.; SHAKHKEL'DYAN, I. V.; Zh. Org.

azo compoundsazo compounds (diazo compounds, triazenes etc.) (benzene compounds) Q 0160 -080Reactions of Aromatic Nitro Compounds.Part 72. Anionic σ-Complexes of Nitroarenes in Azo Coupling Reactions.-Reaction of m-dinitrobenzene (I) with KBH 4 gives a mixture of isomeric anionic σ-complexes which undergo azo coupling with aryldiazonium salts to afford 3-nitroazodibenzenes (III) (7 examples). -(BLOKHINA, N. I.; ATROSHCHENKO, YU. M.; GITIS, S. S.; BLOKHIN, I. V.; GRUDTSYN, YU. D.; ANDRIANOV, V. F.; KAMINSKII, A. YA.; Zh. Org. Khim. 34 (1998) 4, 533-535; Tul'skyy gos. ped. univ. im. Tolstogo, Tula 300026, Russia; RU)

2001 azo compounds azo compounds (diazo compounds, triazenes etc.) (benzene compounds) Q 0160 40 -080 Reactions of Aromatic Nitro Compounds. Part 74. Azo Coupling of Anionic Nitroarene σ-Complexes with Aromatic Diazo Compounds. Effect of Reaction Conditions on the Yield of Nitroazobenzenes. -The effect of the reaction conditions (reactant ratio, temperature and solvent nature) on the product yield in the title azo-coupling reaction is examined and optimal conditions allowing azobenzenes (III) to be prepared in 80-90% yield are established. -(BLOKHINA, N. I.; SHAKHKEL'DYAN, I. V.; ATROSHCHENKO, YU. M.; ALIFANOVA, E. N.; GITIS, S. S.; KAMINSKII, A. YA.; MOISEEV, D. N.; Russ.