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Aromatic and aliphatic nitro compounds were readily reduced to amino compounds in excellant yields with graphite and hydrazine hydrate. 相似文献
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A method was developed for successive selective reduction of one, two, or three nitro groups in 1,3,5-trinitrobenzene with
hydrazine hydrate in the presence of iron chloride and charcoal. This method provides an approach to the one-pot synthesis
of 3,5-dinitroaniline, 1,3-diamino-5-nitrobenzene, or 1,3,5-triaminobenzene from 1,3,5-trinitrobenzene.
Published in Russian in Izvestiya Akademii Nauk. Seriya Khimicheskaya, No. 5, pp. 904–905, May, 2006. 相似文献
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Aromatic nitro compounds are readily reduced by SnCl2, 2 H2O in alcohol or ethyl acetate or by anhydrous SnCl2 in alcohol where other reducible or acid sensitive groups such as aldehyde, ketone, ester, cyano, halogen and O-benzyl remain unaffected. 相似文献
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Single-step reduction of aryl nitro and carbonyl groups to the corresponding synthetically useful alkyl-anilines occurs with excellent yields by treatment with hydrazine and a base in a solvent-free reaction. The method has been applied to a broad range of compounds with different properties. Investigations into the mechanism of the reduction reveal that each group is reduced independently. A mechanism is proposed for this novel reduction of aromatic nitro groups. 相似文献
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Aromatic nitro compounds are reduced to the corresponding amines by epoxides at elevated temperatures (>170 °C).Translated fromIzvestiya Akademii Nauk. Seriya Khimicheskaya, No. 8, pp. 1491–1494, August, 1994.The authors are grateful to Prof. Yu. N. Belokon' for his participation in the discussion of the results of the work.This work was financially supported by the Russian Foundation for Basic Research (code No. 93-03-18044). 相似文献
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Ian D. Entwistle Terry Gilkerson Robert A.W. Johnstone Robert P. Telford 《Tetrahedron》1978,34(2):213-215
A general method has been developed for the rapid, metal-catalysed transfer reduction of nitro compounds to N-substituted hydroxylamines. 相似文献
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Condensation reaction with methylketones and aromatic compounds containing electron-repelling groups
N. Petragnani 《Tetrahedron》1961,12(4):219-225
Aryl tellurium trichlorides and tribromides undergo condensation reactions with acetone, acetophenone, N-dimethylaniline and resorcinol, giving rise to aryl tellurium dihalides. Aryl tellurium triiodides are not reactive. The dihalides derived from N-dimethylaniline and resorcinol undergo ionic interchange reactions with halide ions. When treated with reducing agents the dihalides derived from N-dimethylaniline are reduced to the corresponding tellurides, while the other dihalides are cleaved to the diaryl-ditellurides. 相似文献
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A. C. Bellaart 《Tetrahedron》1965,21(12):3285-3288
The reduction of 1- and 2-nitronaphthalene and of some mono- and dinitro-biphenyls with phosphine was carried out under the conditions described by Buckler.1 Reduction of 1-nitro-naphthalene did not yield any crystalline product while reduction of 2-nitronaphthalene yielded benzo[f]naphtho[2,1-c]cinnoline-N-oxide together with 2,2′-azoxynaphthalene. The mononitro-biphenyls and 4,4′-dinitrobiphenyl were readily reduced to azoxy compounds, while reduction of 2,2′-dinitrobiphenyl gave benzo[c]cinnoline-N,N′-dioxide. 相似文献
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Conclusion A method was proposed for the microdetermination of nitro compounds, which is based on their reduction to amines by heating with potassium iodide and orthophosphoric acid.Translated from Izvestiya Akademii Nauk SSSR, Seriya Khimicheskaya, No. 3, pp. 658–659, March, 1971. 相似文献
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Soofia Mehdizadeh Seyed Javad Ahmadi Sodeh Sadjadi Mohammad Outokesh 《Journal of the Iranian Chemical Society》2014,11(6):1587-1592
The current study aimed at application of the plain and supported platinum nanoparticles as a heterogenous catalyst for the reduction of aromatic nitro compounds. Monodispersed platinum nanoparticles were synthesized by reduction of H2PtCl6 by ethanol in the presence of polyvinyl pyrrolidone as a stabilizer, and then were immobilized on four types of zeolites. The obtained catalyst granules were characterized by X-ray diffractometry and transmission electron microscopy. The study then focused on elaboration of the catalytic activity of the nano catalysts under different operational conditions. It was found that reaction is adequately rapid at ambient temperature, and by utilizing a sufficient amount of catalyst, can be completed in nearly 30 min. Among the utilized zeolitic supports, zeolite 4A had the highest performance, but the mechanism of its synergetic effect on the activity of platinum nano catalyst was not found and requires more investigation. 相似文献
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Summary Transfer hydrogenation of aromatic nitro compounds by hydrazine to the corresponding anilines is catalyzed by (Bu4N)[Ni(tdt)2] (tdt=toluene-3,4-dithiolate) and analogous NiIII complexes in refluxing THF; hydroxylamine derivatives are formed as intermediates. 相似文献
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James R. Beck 《Tetrahedron》1978,34(14):2057-2068
The relative nucleofugicity of the nitro group in many aromatic nucleophilic substitution reactions rivals, and in some cases surpasses, that of the fluorine atom. The use of the nitro function as a leaving group in such reactions facilitates the synthesis of novel substituted benzene derivatives and simplifies the synthesis of a wide variety of heterocycles. 相似文献
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Russian Chemical Bulletin - The catalytic reduction of aromatic nitro compounds with hydrogen was carried out for the first time over low-temperature copper hydrosilicates synthesized at... 相似文献
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《Journal of Molecular Catalysis #》1993,78(3):273-282
High catalytic activities for the selective reduction of aromatic nitro compounds to the corresponding amines under the mild reaction conditions of room temperature and 1 atm of CO were found to be exhibited by chelatephosphine (dppe, dppm, etc.; dppe: 1,2-bis(diphenylphosphino)ethane, dppm: bis(diphenylphosphino)methane)-added rhodium and ruthenium carbonyl complexes in a 5 N NAOH aqueous solution. The reduction proceeded not only with high catalytic activities, but also with remarkably high nitro group selectivities; for example, 1-nitroanthraquinone afforded 1-aminoanthraquinone without other unsaturated groups (such as CO) being reduced. PR3-added Rh(CO)2(acac) complexes (PR3: PEtPh2, PEt2Ph, PEt3, etc.; acac: acetylacetonato) in diglyme in a 5 N NaOH aqueous solution were also found to show significant catalytic activities for the reduction of aromatic nitro compounds under mild CO/H2O conditions. Both electronic and steric factors of phosphine ligands are important in making this reaction proceed at such remarkable rates. 相似文献