1137-41-3Relevant articles and documents
Selective reduction of aromatic nitro compounds to aromatic amines by Baker's yeast in basic solution
Baik, Woonphil,Han, Jeong Lim,Lee, Ki Chang,Lee, Nam Ho,Kini, Byeong Hyo,Hahn, Jung-Tai
, p. 3965 - 3966 (1994)
Aromatic nitro compounds containing o-, m- or p-electron withdrawing groups, such as carbonyl, halogen and nitro, were selectively and rapidly reduced to their corresponding amino derivatives in good yields using Bakers' Yeast in basic solution.
Synthesis of the 3H-azepines utilizing the thermolysis of substituted aryl azides
Ohba,Kubo,Nakai,et al.
, p. 2317 - 2320 (1986)
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Hoshino,Koijumi
, p. 3075 (1972)
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Fe2O3/NGr@C- and Co-Co3O4/NGr@C-catalysed hydrogenation of nitroarenes under mild conditions
Formenti, Dario,Topf, Christoph,Junge, Kathrin,Ragaini, Fabio,Beller, Matthias
, p. 4473 - 4477 (2016)
An improved hydrogenation of nitroarenes using nano-structured iron- and cobalt-based catalysts is presented. Modifications of the heterogeneous catalysts by N-doped graphene-flakes are crucial for the success of selective reductions. The use of polar solvents and basic additives has a significant positive influence on the rate of reduction of nitroarenes. This allows performing non-noble metal-catalysed hydrogenations under very mild reaction conditions (e.g. 70 °C and 20 bar). On the basis of the obtained catalytic results a heterolytic mechanism for the hydrogenation process is postulated, too.
TITANIUM-MEDIATED REDUCTION OF NITROBENZENES AND BENZIL WITH DIALKYL TELLURIDE
Suzuki, Hitomi,Hanazaki, Yasuaki
, p. 549 - 550 (1986)
In the presence of titanium(IV) chloride, nitrobenzenes are easily reduced with dialkyl telluride to give the corresponding amines in good to moderate yields.Benzil is reduced to benzoin which, on a further treatment, is converted to desoxybenzoin.
Silica gel supported AlCl3 catalyzed Friedel-Crafts acylation of aromatic compounds
Boroujeni, Kaveh Parvanak
, p. 1395 - 1398 (2010)
Silica gel supported aluminium trichloride (SiO2-AlCl3) has been shown to be a mild, efficient, and chemoselective heterogeneous Lewis acid catalyst for the acylation of aromatic compounds with acid chlorides. The catalyst can be reused up to five times after simple washing with ether and is stable (as a bench top catalyst).
Synthesis of CoFe2O4@Pd/Activated carbon nanocomposite as a recoverable catalyst for the reduction of nitroarenes in water
Hamadi, Hosein,Kazeminezhad, Iraj,Mohammadian, Sara
, (2021/07/06)
Efficient reduction of nitro compounds into amines is an important industrial transformation. So, it is a great deal to design new catalysts for efficient reduction of the nitro compounds especially in water. In this work, a new magnetic Pd/activated carbon nanocomposite (CoFe2O4@Pd/AC) was synthesized via metal-impregnation-pyrolysis method. The CoFe2O4@Pd/AC was fully characterized by FT-IR, PXRD, FESEM, TEM, VSM, EDX-mapping and BET techniques. The results showed that CoFe2O4@Pd/AC is a highly reactive and easily recoverable magnetic catalyst for the reduction of the nitro compounds by using NaBH4 in water. For instance, aniline was obtained in high yield (99%) after 75 ?min at 25 ?C by using just 6 ?mg of the catalyst. In addition, CoFe2O4@Pd/AC was recovered by a simple magnetic decantation and it exhibits stable activity and remains intact during the catalytic process with no significant loss in activity (8 cycles).
PhSe(O)OH/NHPI-catalyzed oxidative deoximation reaction using air as oxidant
Shi, Yaocheng,Wang, Feng,Yang, Chenggen,Yu, Lei
, (2021/09/06)
A novel oxidative deoximation method was developed in this article. Compared with the reported organoselenium-catalyzed oxidative deoximation reaction, this reaction employed N-hydroxyphthalimide (NHPI) as the co-catalyst, so that the oxidative deoximation reaction could utilize air as oxidant in the green DMC solvent under mild reaction conditions. Control experiments and X-ray photoelectron spectroscopy (XPS) analysis results indicated that NHPI was essential for activating the catalytic organoselenium species. It could accelerate the activation of molecular oxygen in air to promote the reaction process. The reaction can avoid metal residues in product and is of potential application values in pharmaceutical industry due to the transition metal-free process.
Method for reducing aromatic nitro into arylamine
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Paragraph 0121-0124; 0221-0224; 0265-0268, (2020/07/15)
The invention relates to a method for reducing aromatic nitro to arylamine. The method comprises the following steps: (1) taking an aromatic nitro compound as a raw material, water as a hydrogen source, a palladium compound, cheap and easy to obtain, as a catalyst and tetrahydroxydiboron as an additive to reduce nitro to obtain a product; (2) taking the aromatic nitro compound as the raw material, a copper salt, cheap and easy to obtain, as the catalyst, the tetrahydroxydiboron as the additive to reduce the nitro to obtain a product; and (3) taking the aromatic nitro compound as the raw material, water as the hydrogen source, and the tetrahydroxydiboron as the additive, without needing a metal catalyst, to reduce the nitro to obtain a product. A preparation method for the arylamine, which is provided by the invention, is mild in reaction condition, low in costs, environment-friendly, high in yield, and suitable for industrial production.