Nitrobenzaldehydeoximediazoniumchloride

H0.N:CH.C6H3(N02).N(:N).C1; mw 228.60, N 24.51%; pink ndls, mp stable at 60-80° but expl on strong heating. Can be prepd from 2-nitro-4-amino-phenyl acetic acid in cold concd HCl by reaction with amyl nitrite. On heating with ale, this compd forms 2-nitrobenzaldehyde-anti-oxime(qv) Refs: l)Beil 16,538 2)S.Gabriel & R.Meyer,Ber 14,826 & 2334, Footnote 1(1881) 3»Nitrobenzaldehydeoxime»4*diazoniumchloride, H0.N:CH.C6H3(N02).N(:N).C1; mw 228.60, N 24.51%; red plates or ndls, mp expl on heating. Can be prepd by treating amyl nitrite with 3-nitro-4-amino-phenyl acetic acid in a mixt of HCl, eth & ale. On heating with ale, this comp forms 3-nitrobenzaldehyde-anti -oxime

Refs: l)Beil 16,538 2)S.Gabriel,Ber 15,837(1882) /3>Benzaldehydeoxime*picrylether,

C6H5.CH:N.0.C6H2(N02)3; mw 332.23, N 16.87%; yel prisms(from acet), mp 181-2°(dec); prepn and other props in Refs 1 & 5. Its three mononitro derivs are described in the literature: 2-Nitro-ß •benzaldehydeoxime-O'picryletber, pale yel prisms (from aq acet), mp 157-8°(dec)(Refs 2 & 5); 3-Nitro -ß-benzaldehydeoxime-O-picryletber, pale yel crysts(from acet), mp 169° (dec) (Refs 3 & 5) and 4-Nitro-ß-benzaldehydeoxime-O-picrylether, pale yel prisms(from acetone), mp 168° (dec) (Refs 4 & 5). Prepn and other props are given in the Refs. These compds are probably mild expls Refs: l)Beil 7,[170] 2)Beil 7, [1891 3)Beil 7, [195] 4)Beil 7, [200] 5)L.Brady & L.Klein,JCS 127,846-7(1925)

Benzaldehydephenylhydrazone and Derivatives

Benzaldehydepbenylhydrazone (called Benzyliden -Phenylhydrazin; Benzal-phenyl-hydrazin or Benz-aldehyd-phenylhydrazon in Ger), C6Hs.NH.N:CH.C6Hs, mw 196.24, N 14.28%, is described in Beil 15,134,(31) & [57]

2'Azida-benzaldehydepbenylhydrazone,

C6H5.NH.N:CH.C6H4.N3, mw 237.26, N 29.52%; yel prisms(from ale), mp 101.5-102°; readily sol in benz, hot ligroin and ale; prepn in Ref 2 Refs: l)Beil 15,138 2)E.Bamberger & E.Demuth, Ber 34,1335(1901)

4-Azido-benzaldehydephenylhydrazone,

C6H5.NH.N:CH.C6H4.N3, mw 237.26, N 29.52%; straw-colored crysts(from methanol), mp 190 (although effervescence begins at 120°); readily sol in acet, benz, et acet or chlf; prepn in Ref 2 Refs: l)Beil 15,(33) 2)M.D.Forster & H.M.Judd, JCS 97,260(1910)

Benzaldehyde-^N-nitroso-phenylhydrazone),

C6H5.(N0).N:CH.C6H5; mw 225-24, N 18.66%, is described in Beil 15,(104)

Mononitrobenzaldebydephenylbydrazone,

C H ,N,02, mw 241.24, N 17.42%. Three isomers are described in Beil 15,136,137,(32,33) & [58,59]

Dinitrobenzaldehydepbenylbydrazone,

C H10N404, mw 286.24, N 19.58%. Two isomers are3described in Beil 15,138,(33) & [59]

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