Azobenzene 3,3 -dinitro

Sodium perborate, coupling of -amino-acetanilide to 4,4 -bis(acetamido)-azobenzene using, 40, 19 Sodium polysulfide as agent to reduce 1,3 dinitro-4,6-diaminobenzene to 2,4,5-triaminonitrobenzene,... [Pg.65]

Prepd by reacting 5 -chloro-2,4,-dinitro-4-hydroxy-azobenzene hydrazine hydrate in hot alcohol. Decomposes 178—80°... [Pg.208]

N 19.44%. Four isomers are known 2,3 -Dinitro-4-hydroxy-azobenzene, H0.C6H3(N02)N N.C6H4.N02 red crysts (from acet acid), mp 202° (Ref 4)... [Pg.233]

Dinitro-4-hydroxy-azobenzene, brn-red crysts (from l-ethoxy-2-ethanol), mp 190° (Ref 3)... [Pg.233]

Dinitro-4-hydroxy-azobenzene, H0.C6H4J N.C6H3(>I02)2 crysts (from MeOH), mp 185-86° (Ref 2)... [Pg.233]

Trinitro-3-hydroxy-azobenzene, H0.C6H2(N02)2N N.C6H4.N02 red ndls (from acet ac + w), mp 179° was prepd by heating benzoquinone-( 1,4)-oxime-4,6-dinitro-3-hy droxy-phenylhydrazone with nitric acid (d 1.39) acetic acid (Refs 1 3). No expl props are reported... [Pg.233]

Dinitro-2, 4-diamino-azobenzene, 02N.CgH4.N N.CgH2(N02)(NH2)2 orn-color-ed powd, colors acetate rayon a golden yel, was prepd by coupling 4-nitro-l, 3-diamino-benzene with 4-nitroaniline (Ref 1)... [Pg.23]

Diethoxy-azobenzene and Its Dinitro- and Hexanitro- Derivatives. See under Azo-phenetole in Vol 1, pA656-R... [Pg.117]

Dinitroozobenzene, (N02)2 CeH,-N N -C Hj red ndls (from ale) mp 116-9° prepd by reacting yel mercuric oxide with a hot alcoholic soln of 2,4-dinitro-hydrazobenzene. Treatment with fuming nitric acid gives, according to the exptl conditions, either 2,4,4 -trinitro-azoxybenzene or 2,4,4 -trinitro-azobenzene Ref Beil 16, 58... [Pg.648]

Nitrosadinitroozobenzene (called 2-phenyl-4.6-dinitro-benztriazol-l-oxyd in Ger), C Hj — N N-C,H2(N0)-(N02)2 mw 301.22, N 23-25% golden-yel lfts, mp 249-50° prepd by boiling picrylhy dr azobenzene with ale or acetic acid. According to Freund (Ref 3) this compd is identical with the dinitrosonitroazobenzene (qv) of Willgerodt Ferko (Ref 2) to which the formula C l Ns 04 had been erroneously assigned... [Pg.648]

Dinitro-2t2 l-dietboxy-azobenzene brownish-red ndls (from chlf) mp 284-5°, sublimes without decompn sol in cold chlf or cold benz insoi in boiling aic dissolves without decompn with a yel-red color in cold... [Pg.657]

Dinitro-p-azostilbene or Azobis (3-nitro stilbene, called in Ref 2 3,3,-Dinitro-4/4 -distyryl-azobenzene, CjHg-CHiCH--QHsfNO NrN-QH NOJ-CHiCH-QH, carmine-red crysts mp 260-1°. Prepn and props are given in Ref 2... [Pg.659]

Diethoxy-azobenzene and its dinitro and hexa-nitro derivs see Azo-phenatole 1 A656... [Pg.555]

Dinitro-diphenylamin)-<3 azo-3> (2 .4 -dinitro-diphenylamin) in Ger], [(02N)2CgH3-NH.CgH4.N. ]2 mw 544.43, N 20.58% golden-yel ndls(from pyridine), mp 285° sol in hot pyridine and in benzoic acid ethylester insol in other solvs was prepd by the condensation of 3"amino -3 -(2,4-dinitroanilino)-azobenzene with 4-chloro -1,3-dinxtrobenzene... [Pg.131]

Dinitro-3- amino azobenzene, CtHs -N N -CsHj(NOa )jNH2, red ndls, mp 200°... [Pg.185]

Dinitro-2,2 -di methyl azobenzene red-bm lfts (from toluene), mp 258° readily sol in boiling glacial acetic acid or nitrobenzene and in benz, diffc sol in ale prepd by treating 5-nitro-l-methylbenzene-2-diazonium sulfate with a cuprous chloride soln in HC1 (Ref 1)... [Pg.661]

Dinitro-4,4 -Dimethy azobenzene prisms (from glacial acetic acid), mp 114°, readily sol chlf or eth obtd by dissolving p,p -azotoluene in 3 parts cold nitric acid (Ref 3)... [Pg.661]

H0.C6H4.N N.C6H2(N02)2NH.NH2 mw 318.25, N 26.41% red-brown crystals si sol in boiling ale sol in boiling nitro-benzene. Prepd by reacting 5,-chloro-2,4,-dinitro-4-hydroxy-azobenzene hydrazine hydrate in hot alcohol. Decomposes 178—80°... [Pg.208]

Dinitro-4, 4 -diamino-azobenzene, H2N.(02N).C(5H3.N N.C6H3(N02).NH2 red plates or orn ndls (from phenol + ethanol), rap 340-41° was obtd by hydrolysis with H2SO4 of 4, 4 -diacetamido-3, -dinitro-azobenzene, itself obtd by coupling of 2-nitro-4-nitrosoacetanilide 4-amino-2-nitroacetanilide in acetic acid (Ref 2)... [Pg.39]

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