102-50-1Relevant articles and documents
Palladium on Polydopamine: Its True Potential in Catalytic Transfer Hydrogenations and Heck Coupling Reactions
Kunfi, Attila,Szabó, Vivien,Mastalir, ágnes,Bucsi, Imre,Mohai, Miklós,Németh, Péter,Bertóti, Imre,London, Gábor
, p. 3236 - 3244 (2017)
The application of Pd–polydopamine and magnetic Fe3O4@Pd–polydopamine catalysts in catalytic transfer hydrogenation reactions and the Heck arylation is reported. The reduction of a wide range of aromatic nitro-compounds bearing both electron-donating and -withdrawing substituents to the corresponding anilines could be efficiently performed, although the reduction of carbonyl compounds was found to be less general. In the latter case, only aromatic ketones could be reduced to the corresponding alcohols, whereas aldehyde substrates were unaffected, which may be owing to their reaction with the catalyst support leading to catalyst deactivation. By using magnetic Fe3O4@Pd–polydopamine system, facilitated catalyst recovery and reuse for five consecutive cycles without considerable loss of activity in nitro-group reduction. The efficiency of the catalyst in Heck reactions was comparable to that in transfer hydrogenation, however, no catalytic activity was observed upon reuse in this case, likely as a result of metal leaching. We also explored tandem Heck reaction/catalytic transfer hydrogenation sequences, however, the two reactions showed limited compatibility under the applied conditions.
Water as a hydrogen source in palladium-catalyzed reduction and reductive amination of nitroarenes mediated by diboronic acid
Zhou, Yanmei,Zhou, Haifeng,Liu, Sensheng,Pi, Danwei,Shen, Guanshuo
, p. 3898 - 3904 (2017)
An unprecedented palladium-catalyzed chemoselective reduction and reductive amination of nitroarenes with water as a hydrogen source mediated by diboronic acid have been discovered. A series of aryl amines containing various reducible functional groups were obtained in good to excellent yields.
Methoxy aniline compound and synthesis method thereof
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Paragraph 0027; 0030-0032; 0041-0042, (2021/05/19)
The invention mainly relates to a preparation method of anisidine. According to the technical scheme, under the promotion of the photocatalyst and blue light, in the argon atmosphere, nitro compounds and methanol generate methoxyaniline, wherein products and additional products with stable molecular structures and excellent chemical properties are prepared, wherein a photocatalyst and a blue light source are used in the method, and a new path is provided for synthesis of methoxyaniline compounds. The method has the characteristics of mild reaction conditions, simple reaction system, less reaction equipment, simplicity and convenience in experimental operation and the like. The methoxyaniline derivative and the synthetic method thereof can be applied to a plurality of industrial production fields of dyes, pesticides, medicines, rubber additives and the like. The method is particularly suitable for scientific research, development and utilization of efficient and selective synthesis of methoxyaniline compounds by a one-pot method.
Synthesis method of aminobenzoate compound (by machine translation)
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Paragraph 0094-0098; 0137-0139, (2020/08/09)
The synthesis method comprises the following steps: carrying out a hydrogenation reduction reaction of a nitroanisole compound with a carbon-coated nickel containing alkaline earth metal in a hydrogen atmosphere; wherein the shell layer is a graphitized carbon layer containing alkaline earth metal, nitrogen and oxygen. To the method, the alkaline earth metal-containing carbon-coated nano composite material is used as a catalyst, the carbon material and the nickel nanoparticles cooperate to play a good catalytic effect, and the alkaline earth metal of the shell layer further synergistically improves the catalytic performance of the material. (by machine translation)
Synthesis method of amino-anisole compound
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Paragraph 0057; 0154-0156, (2020/08/09)
The invention provides a synthesis method of an amino-anisole compound. The synthesis method comprises the following steps: taking a carbon-coated nickel nano composite material containing alkali metals as a catalyst, and catalyzing a hydrogenation reduction reaction of a nitro-anisole compound in a hydrogen atmosphere; wherein the nano composite material contains a core-shell structure with a shell layer and an inner core, the shell layer is a graphitized carbon layer containing alkali metals and oxygen, and the inner core is nickel nano particles. According to the method, the nano compositematerial is used as a catalyst; a carbon material and the nickel nano particles generate a synergistic effect and a good catalytic effect, the alkali metals of the shell layer further synergisticallyimprove the catalytic performance of the nano composite material, and the catalyst is used for hydrogenation reduction of nitro-anisole compounds to synthesize amino-anisole compounds, and has excellent activity, selectivity and safety.
