Please note: If you switch to a different device, you may be asked to login again with only your ACS ID. Clicking on the donut icon will load a page at with additional details about the score and the social media presence for the given article. Highly selective reduction of nitroarenes with gold nano-catalysts immobilized in porous aromatic frameworks. Adopt embodiment one gained platinum nano wire as catalyzer, in reaction tubes, add 0.1mL catalyzer (platinum nano wire, about 1mg), 1mmol oil of mirbane, 1mmol potassium hydroxide, 2mL solvent (concrete solvent species sees Table 4).This system is connected the hydrogen bag, cool off-vacuumize-put hydrogen then, circulate 3~4 times, put into hydrogen, return to room temperature; This system obtains product (concrete temperature of reaction, reaction times see Table 4) heat 12-24h in 80-120 ℃ oil bath after.Get product and carry out gas-matter coupling (GC-MS) and gas-chromatography (GC) analysis. be used for the nitrobenzene reduction process; usually need harsh reaction conditionss such as High Temperature High Pressure; and reaction is difficult to be controlled at one step of nitrogen benzide; the nitrogen benzide that obtains can continue hydrogenation usually and generate hydrazobenzene, and hydrazobenzene also can continue reaction, finally generates aniline. 1. the preparation method of an azobenzene derivatives, it is characterized in that: with a kind of in the nitrobenzene derivative is reaction substrate, with one or both the mixture in platinum nano wire or the palladium nanometer wire is catalyzer, with potassium hydroxide, sodium hydroxide, sodium tert-butoxide or potassium tert.-butoxide is alkali, reaction substrate, catalyzer and alkali are added in the solvent, under normal pressure, in the hydrogen atmosphere, 20 ℃~140 ℃ were reacted 2~24 hours down, prepare nitrogen benzide; Wherein, the structural formula of described nitrobenzene derivative is. Go to our Ask Question Asked 2 years, 10 months ago. (= 1/2 mol.) In the method, one of nitrobenzene derivatives is used as a reactant; one or a mixture of two of platinum nanowires or palladium nanowires is used as a catalyst; and potassium hydroxide, sodium hydroxide, (CH3)3CONa or (CH3)3COK is used as alkali. Procedure for obtaining rutenium / iron catalysts on carbon supports. 2 is the reaction synoptic diagram of the derivative that catalyst prepares nitrogen benzide among the embodiment. More the number of alkyl group attached with the carbon atom carrying the positive charge greater would be the tendency to stabilise positive charge via inductive effect, and hence more stable. Be the post isolated yield. Reduction by means of Zinc Dust. Therefore, the method for seeking a kind of reaction conditions gentleness, transformation efficiency and higher, the eco-friendly synthetic azobenzene compound of selectivity becomes extremely important. 3):δ7.83-7.80(d,4H);7.32-7.29(d,4H);2.43(s,6H). Practice and master your preparation for a specific topic or chapter. If you are the author of this article you do not need to formally request permission contained in this article in third party publications This is the first report of a AuNP-based system that can selectively reduce nitroarenes to either of two synthetically important intermediates as well as aniline and, in this regard, is an exciting discovery that will form the basis to develop a continuous flow process enabling facile scale-up. Hydrazone derivatives were prepared to explore the cleavage of N-N σ-bonds; the results show that a low-lying LUMO assists the transition state for accepting an electron, and the stabilisation that the potential fragments from N-N bond cleavage afford to the fragments is important in determining whether cleavage is observed. Soochow University, Address before: 2 Visible-light irradiation (λ < 600 nm) of commercially-available CdS in alcohol successfully promotes hydrogenation of azobenzene to hydrazobenzene with more than 95% selectivity. If you are not the author of this article and you wish to reproduce material from Most useful is the reduction … "Reproduced from" can be substituted with "Adapted from". Gold nanoparticles stabilized by phosphine-decorated polymer immobilized ionic liquids ([email protected]2-PIILP) is an extremely efficient multiproduct selective catalyst for the sodium borohydride-mediated reduction of nitrobenzene giving N-phenylhydroxylamine, azoxybenzene, or aniline as the sole product under mild conditions and a very low catalyst loading.


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