2944-28-7Relevant articles and documents
Preparation method of 1-(phenylamino) anthraquinone
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Paragraph 0022-0024, (2020/06/02)
The invention discloses a preparation method of 1-(phenylamino)anthraquinone. The preparation method comprises the following steps: adding tetramethylurea into a container with a stirrer, starting stirring, refluxing water, adding 1-nitroanthraquinone, dissolving, adding 1,3-diphenylurea, heating to 120-145 DEG C, carrying out a heat preservation reaction for 48 hours, cooling to room temperatureafter the reaction is finished, carrying out suction filtration, washing the filter cake with tetramethylurea, pouring the filtrate into water, separating out a product, and filtering to obtain a 1-(phenylamino) anthraquinone crude product. According to the preparation method of the 1-(phenylamino)anthraquinone, a nucleophilic substitution method is adopted, 1-nitroanthraquinone and 1,3-diphenylurea are used as raw materials, and tetramethylurea is used as a solvent, so that heavy metal pollution is avoided, safety and environmental protection are achieved, and the purity is as high as 97%.
Palladium-catalyzed amination of aromatic halides in water-containing solvent systems: A two-phase protocol
Wuellner, Guido,Jaensch, Helge,Kannenberg, Sven,Schubert, Frank,Boche, Gernot
, p. 1509 - 1510 (2007/10/03)
The use of the six-fold sulfonated ligand BINAS-6 1 permits the Pd0-catalyzed amination of aromatic halides in water containing single- or two-phase systems.
KINETIC OF THE REACTION OF 1-BROMOANTRAQUINONE AND ITS AMINO AND SULFO DERIVATIVES WITH ANILINE
Vinokurov, Yu. V.,Nazarova, N. E.,Solodova, K. V.,Shein, S. M.
, p. 1740 - 1744 (2007/10/02)
The products and the kinetics of the reaction of 1-bromo- and 1-amino-4-bromo-anthraquinones and sodium 1-bromoanthraquinone-3-sulfonate and 1-amino-4-bromoanthraquinone-2-sulfonate with aniline were studied in a mixture of dioxane and a buffer solution of borax and sodium carbonate with pH 10 (1.3:1 by volume) in the presence of copper sulfate and without a catalyst.The products from substitution of the bromine atom by the phenylamino group and also the debromination products are formed, and their ratio depends on the presence of oxygen and of the catalyst.In thenoncatalytic reaction the NH2 group reduces and the SO3(1-) group increases the mobility of the bromine atom; in the catalytic reaction both groups increase the mobility of the bromine atom.The activating effect of the amino group is probably due to the formation of chelate complex involving the copper ions and the amino and carbonyl groups of the anthraquinone ring.