3102-70-3Relevant academic research and scientific papers
Novel environment-friendly production process for preparing amine product and H - acid through silane chemical reduction of several nitro compounds
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Paragraph 0049-0051, (2021/09/08)
The invention relates to the field of new materials for fine chemicals, and relates to a reduction reaction of a series of nitro compounds, in particular to m-nitroaniline. Several particular important amine compounds such as m-phenylenediamine, 5 - amino o-cresol, 2 - methyl p-phenylenediamine, 1/2 - naphthylamine, H - acid amine and 2, 4, 6 - trimethyl-M-phenylenediamine are prepared from the corresponding mono-or double-nitro compound precursors with a new environmental protection production process technology of and acids derived from the novel process technology. H.
Synthesis of 2, 4, 6-trimethyl of lentine method (by machine translation)
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Paragraph 0015; 0021, (2016/11/14)
The present invention relates to synthesis of 2, 4, 6-trimethyl of lentine method, characterized in that comprises the following steps : (1) in trimethyl benzene to nitration instillment nitration mixture generating 2, 4, 6-trimethyl-dinitrobenzene, after the completion of reaction, static layer, the organic layer obtained by and water washing in 2, 4, 6-trimethyl-dinitrobenzene ; (2) the step (1) of the 2, 4, 6-trimethyl-dinitrobenzene by adding high pressure autoclave, then adding catalyst and solvent, nitrogen, hydrogen replacing the air in the high-pressure autoclave, through hydrogen hydrogenation reduction generating 2, 4, 6-trimethyl lentine; the hydrogenation reduction temperature is 50-120°C, the catalyst is a nickel catalyst; after the end of the hydrogenation discharge hydrogen, methanol is removed after discharging, the cooling crystallization, filtering to obtain the 2, 4, 6-trimethyl metaphenylene diamine. The synthetic route of this invention is short, the product has high purity, high yield, few reaction steps, the hydrogen reduction catalyst for a long period of use. (by machine translation)
Triazinyl reactive dyestuffs in which triazinyl group is further substituted with a beta-chloroethylsulfonyl- or vinylsulfonylbutyrylamino moiety
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, (2008/06/13)
Reactive dyes of the formula STR1 in which D is the radical of an organic dye of the monoazo, polyazo, metal complex azo, anthraquinone, phthalocyanine, formazan, azomethine, dioxazine, phenazine, stilbene, triphenylmethane, xanthene, thioxanthrone, nitroaryl, naphthoquinone, pyrenequinone or perylenetetracarbimide series, R is hydrogen or substituted or unsubstituted C1-4 -alkyl, X is a substituent which is detachable as an anion, B is a radical of the formula STR2 R1 and R2, independently of each other, are hydrogen or substituted or unsubstituted C1-4 -alkyl or phenyl, A is a substituted or unsubstituted aliphatic or aromatic bridge member, Y is a --CO--Z or --SO2 --Z radical, Z is an aliphatic, aromatic or heterocyclic reactive radical, and n is 1 or 2, are suitable for dyeing or printing cellulose-containing and nitrogen-containing materials and in high dyeing yield produce dyeings and prints having good fastness properties.
Design of novel mesomorphic compounds methyl-substituted N,N'-dialkanoyl-1,3-benzenediamines
Kawada, Hiromitsu,Matsunaga, Yoshio,Takamura, Takumi,Terada, Masahiro
, p. 1867 - 1871 (2007/10/02)
Calorimetric, X-ray diffraction, and broad-line proton nuclear magnetic resonance studies on the thermal behaviour of N,N'-dialkanoyl-1,3-benzenediamines carrying one, two, three, and four methyl groups disclosed that the enthalpy change at the transition to an isotropic liquid can be considerably diminished by this substitution and that various mesomorphic states can be obtained by this approach.Thus the 2-methyl compounds with decanoyl to octadecanoyl groups exhibit hexagonal disordered columnar phases.Furthermore, the enthalpy changes in the 2,4,6-trimethyl compounds with octanoyl to octadecanoyl groups are so much reduced that their mesophases are nematic in type.On the other hand, the viscous birefringent fluids formed by the 4-methyl, 2,4-dimethyl, 4,6-dimethyl, and 2,4,5,6-tetramethyl compounds give X-ray diffraction patterns indicating highly ordered structures.
