6362-11-4Relevant 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 0052-0057, (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.
Denitrification and neutralization process of H-acid monosodium salt
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Paragraph 0024; 0025; 0026; 0027, (2018/07/06)
The invention provides a denitrification and neutralization process of H-acid monosodium salt. The process comprises the following steps: adding a certain amount of ethylene glycol monomethyl ether and phenol into a mixed solvent of a sodium hydrocarbonate solution, adding the mixture into a compound catalytic system of Ir(CO)Cl(PPh3)2 and RhCl3, introducing CO into a nitrification intermediate reaction kettle, controlling the reaction conditions such as certain pressure, temperature and reaction time, and utilizing a CO/water system to carrying out catalytic reduction on a nitrification intermediate so as to obtain an amino intermediate of H-acid. The denitrification and neutralization process can effectively improve the product yield and quality and can reduce the emission of three wastes.
