2 2,4-Dinitro-l-naphthylamine

For instance, passing ammonia into a boiling solution of 2,4-dinitro-l-naphthyl -toluene-sulfonate gives 2,4-dinitro-l-naphthylamine quantitatively, and 2,4-dinitro-TV-phenyl-l-naphthylamine is obtained in 98% yield by use of aniline.854... 

Dinitronaphthalene ( Gamma-dinitronaph-thalene, 1,3-DNN), Bright yel needles from aq pyridine, mp 144°, bp subl (Refs 1 32) CA Registry No 606-37-1. It is prepd by the action of nitric ac/sulfuric ac on naphthalene at low temps (Refs 14 33) by the nitration of 1-MNN with a mixt of 17.3% nitric ac, 61.2% sulfuric ac, and 21.5% w, temp 59-75°, time 90min (Ref 52) by the action of powd Cu (Ref 18) or hydrazine (Ref 22) on l-chioro-2,4-dinitro-naphthalene by the diazotization of 2,4-dinitro-1-naphthylamine followed by redn of the dia-zonium salt with EtOH (Ref 25) or by the action of Br on 5,7-dinitro-l,2,3,4-tetrahydro-naphthalene followed by dehydrobromination (Ref 13). It is used to prep more highly nitrated naphthalenes... 

Nitro-l-dictzo-2-napbtbol [called 4-Nitro-l -diazo-naphthol-(2) or 4-Nitro-naphthochinon (l 2)-diazid-(l) in Get], yel ndLs (from petr eth), mp 130-34° (dec) readily sol in acet, glacial acet acid St benz mod sol in ale si sol in w was prepd by diazotizing 2,4-dinitro-1-n aphthy lamin e (Refs 1, 4 St 6) J-Nitro-l-diazo-2-napbthol, crysts (from diox-ane), mp 160-62°(dec) was obtd when the 2, 7-dinitro-l-naphthylamine diazotized salt was poured into water contg Na acetate (Ref 8) Refs 1) Beil 16, 533 2) Beil 16, (365)... 

Dinitronaphthalene has been prepared previously from diazotized 4-nitro-l-naphthylamine by a modified Sandmeyer procedure, - from 5,8-dinitrotetralin by dehydrogenation, by the deamination of l,4-dinitro-2-naphthylamine, and by the decomposition of 4-nitro-l-naphthalenediazonium cobaltinitrite. The method described above has been published. ... 

The transfer of protons by neutral organic bases had also received a lot of experimental attention after Makrlik et al. had shown in 1983, that aniline and 2,4-dinitro-N-picryl-l-naphthylamine acted as proton carriers from water to the non-aqueous phase. The transfer of protons facilitated by neutral molecules containing amino groups was then thoroughly studied by Homolka et and by Yoshida and Preiser, who studied the transfer of protonated phenanthroline. Wang et later... 

CA Registry No 2493447-2. It is prepd by bromination of 5,6-dinitro-l,2,3,4-tetrahydro-naphthalene followed by dehydrobromination (Ref 20), from 2-nitro-l-naphthylamine by the same procedure as used for the prepn of the 1,4-isomer (Ref 20)... 

Dinitro- l-diazo-2-napbtkol, crysts (from dioxane), mp 158°(decomp) was obtd when diazotized 2,4,7-trinitro-l-naphthylamine was poured into water (Ref 4)... 

Dinitro-1-Naphthol (4,6-Dinitro-l-oxy-naphthalene). Crysts from methanol (as Na salt), mp 240°. Sol in chlf. Prepn from 1,4,6-trinitro-2-naphthylamine by diazotization in AcOH-sulfuric acid to yield 4 6-dinitro-2-diazo-1-naphthol steam is passed thru the mixt to yield the naphthol j... 

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