4- Nitro-l,2-phenylenediamine

Investigations of the mechanism of the reactions of diamines with 2,3-dibro-mopropan-l-ones were not reported in early works. An assumption about the mechanism was made only in [107] on the basis of the results of the investigation of a reaction utilizing 4-nitro-l,2-phenylenediamine. The authors propose the formation of o-bromochalcones 92 initially, which then form intermediates 93 in the reaction with the amino group of a diamine. Then compounds 93 undergo further transformation into /2-aminoketones 94, dihydroazirenoquinoxalines 95 or acetylenic ketones 96 (Scheme 1.26). The yields of aziridines 95 did not exceed 10% and the reaction product ratios depended on the conditions. It is noted, in particular, that carrying out the reaction in methanol for 1 h with the use of N,N-dimethylbenzylamine as a catalyst increased the yield of 95. It should be noted... 

NITRO-l,4-PHENYLENEDIAMINE see ALL750 4-NITRO-l,2-PHENYLENEDIAMINE see ALL500 o-NITRO-p-PHENYLENEDIAMINE (MAK) see ALL750 4-NITROPHENYL ISOCYANIDE see IKH780 p-NITROPHENYL ISOCYANIDE see IKH780 p-NITROPHENYL ISONITRILE see IKH780... 

Vasudevan, D. and Stone, A.T., Adsorption of 4-nitrocatechol, 4-nitro-2-aminophenol, and 4-nitro-l,2-phenylenediamine at the metal (hydr)oxide/water interface Effect of metal (hydr)oxide properties, J. Colloid Intetf. Sci., 202, 1, 1998. 

The antimutagenic effects of ajoene were investigated by the Ames test. Ajoene inhibited mutagenesis induced by both benzo[a]pyrene (B[a]P) and 4-nitro-l,2-phenylenediamine (NPD) in a dose-dependent manner. In particular, NPD-induced mutagenesis was more effectively suppressed by ajoene than the B[a]P-induced type. Furthermore, the inhibition of mutagenesis by ajoene was more effective for transition-type mutations than for the frame shift type. HPLC analysis of B[a]P metabolism in the presence of the rat liver microsomal fraction (S-9) showed that ajoene dose-dependently inhibited the metabolic activation of B[a]P which suggests that ajoene affected the metabolic enzymes in the S-9 fraction [100]. 

The first photorefractive polymer (77) was a guest/host system based on a partially cross-linked form of the electro-optic side-chain polymer bisA-NPDA (bis-phenol-A-diglycidylether (bis-A) and 4-nitro-l,2-phenylenediamine (NPDA)) doped with the transport agent DEH (diethylamino-benzaldehyde diphenylhydrazone). NPDA also provided photosensitivity. Simultaneously, we developed at the University of Arizona a flilly functionalized side-chain polymer that showed electro-... 

Br , I , phosphate, and sulfate as TBA salts (100 equivalents) from left to right and (b) color changes of 4-nitro-l,2-phenylenediamine 20, alizarin 21, and 2,2 -bis(3-hydroxy-l,4-naphthoquinone) 22 in CH2CI2 (1 x lO M) by treatment with 100 equivalents of anions in the form of their TBA salts. (Redrawn from Ref. 54. Wiley-VCH, 2001.)... 

NCI-C03941 4NDB 4-NITRO-l,2-BENZENEDI-AMINE 4-NITRO-l,2-DIAMNOBENZENE p-NITRO-o-PHENYLENE-DIAMINE 4-NITRO-o-PHENYLENE-DIAMINE 4-NITR0-1,2-PHENYLENEDIAMINE 4-NOPD... 

TetrafluoronUroanihnes and 2,5,6 tnfluoro-4-nitro-l,3-phenylenediamine react with nitrous acid to give tnfluoronitrodiazooxides and 5-fluoro-6-nitro-bis 1,2,3 3,4-diazooxide, respectively [97] (equation 89)... 

Similarly to 3,3 -diaminobenzidine, other aromatic o-diamines also react with selenium(rV) in HCl medium. The o-phenylenediamine method [30,31] is more sensitive than the DAB method. The following reagents have been proposed for selenium N-methyl-o--phenylenediamine (e = 1.9-10 at 346 nm) [32], 2-aminodiphenylenediamine [33], 4-nitro-1,2-diaminobenzene [34], 4,5-diamino-2,6-dimercaptopyrimidine [35], l,2-diamino-4-chlorobenzene [36], 4,5,6-triaminopyrimidine [37], 3,4-diaminobenzoic acid [38], and 2,3-diaminonaphthalene [39,40]. 

Nitro-l-diazo-2-naphthol-4-sulfonic acid prefers the 2-position in spite of the nitro group, and increasing alkalinity favors ortho coupling with diazophenols. 1-Naphthalenesulfamic acid [24344-19-2] (ArNHSO H) and N-nitro-1-naphthylamine [4323-69-7] (ArNHNO ) couple exclusively in the para position. The substitution of resorcinol [108-46-3] and y -phenylenediamine [108-45-2] is compHcated and has been discussed (29,30). The first azo dyes from aniline, eg. Aniline Yellow [60-09-3] (19) (Cl Solvent Yellow 1 Cl 11000) were manufactured in 1861 and Bismark Brown [10114-58-6] (20) (Cl Basic Brown 1 Cl 21000) appeared in 1863. The reaction is as follows ... 

N,N -Dip icryl-5-nitro-T,3-phenylenediamine or 5-Nitro-l,3 bis (2,4,6-trinitroanilino)-benzene,... 

Tr in itro-4-ami no diphenyl amine, HaN -C,Hs(NOa )-NH-C6Hs(NOa)a. Red-brn ndls (from AcOH), mp 226°. Can be prepd from 2-nitro-l,4-phenylenediamine and 4-chloro-1,3" dinitrobenzene. Its expl props were not in-ve sti gated... 

Called in Beil N-[3 Nitro-phenyl]-2,4,6-trinitropheny endiamin-( 1,3)1, H2N(02N)2-C4H-NH-C6H4 N02. Oysts(from et acet), mp 272°(decomp). Can be prepd either by heating 2,3,4,6-tetranitroaniline with 3 nitrobenzene in benzene or by fusing N-nitro N-methyl-2,4,6-trinitro-l,3-phenylenediamine with 3-nitroaniline at 110—120°. Its expl props were not reported... 

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