Method for synthesizing 1-aminoanthraquinone

A technology of aminoanthraquinone and nitroanthraquinone is applied in chemical instruments and methods, preparation of organic compounds, chemical recovery and other directions, which can solve the problems of complex methods and high cost, and achieve simple raw materials, low cost, and low reaction process difficulty. Effect

Active Publication Date: 2013-05-22
LIAONING UNIVERSITY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The problem is that the method is complicated and the cost is high

Method used

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  • Method for synthesizing 1-aminoanthraquinone

Examples

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Comparison scheme
Effect test

Embodiment 1

[0019] In a 1000ml autoclave equipped with a stirring bar, add 1-nitroanthraquinone (12.65g), selenium powder (0.158g), H 2 O (400ml), NaHCO 3 (4.2g), the pH value of the reaction system was about 8; carbon monoxide was introduced to 5MPa, then heated to 150°C and stirred for 3 hours, cooled to room temperature, suction filtered, and dried to obtain the target product 1-aminoanthraquinone. The product was analyzed by high performance liquid chromatography and the yield was 95.53%.

Embodiment 2

[0021] Other experimental method and condition are the same as embodiment 1, only change time, record 1-aminoanthraquinone productive rate as follows:

[0022] time (h) 1 2 4 5 6 Yield(%) 94.92 94.36 95.46 95.15 98.97

Embodiment 3

[0024] Other experimental method and condition are the same as embodiment 1, only change temperature, record 1-aminoanthraquinone productive rate as follows:

[0025] temperature(℃) 120 130 140 160 Yield(%) 87.64 95.07 95.15 95.26

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Abstract

The invention relates to a method for synthesizing 1-aminoanthraquinone. The technical scheme is as follows: in the presence of carbon monoxide and water, 1-nitroanthraquinone used as a raw material reacts by using selenium as a catalyst and inorganic alkali or organic alkali as a cocatalyst at high temperature under high pressure to synthesize the 1-aminoanthraquinone by one step. The invention is simple and safe to operate, and has the advantages of water-phase reaction, accessible raw material, no pollution, high selectivity and high yield; and after the reaction finishes, the catalyst can be recycled and utilized repeatedly.

Description

technical field [0001] The present invention relates to the synthesis of 1-aminoanthraquinone, in particular to a method for synthesizing 1-aminoanthraquinone by reaction at high temperature and high pressure in the presence of water and carbon monoxide using selenium and 1-nitroanthraquinone as raw materials. Background technique [0002] 1-Aminoanthraquinone, also known as 1-amino-9,10 anthracenedione, is an important intermediate for the synthesis of anthraquinone dyes. It is widely used and consumes a lot. It is the main raw material for the production of bromic acid and pyrazole anthraquinone . It can be used in the production of disperse, vat, acid, and reactive dyes, as well as in the production of inks, coatings, polymers, and liquid crystal dyes. It occupies an extremely important position in the dye industry. Currently, conventional methods for synthesizing 1-aminoanthraquinone include alkali sulfide reduction, ammonolysis, and liquid-phase catalytic hydrogenati...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C221/00C07C225/34
CPCY02P20/584
Inventor 刘晓智高扬兰诗龙张欣李俊佟健张川洋王北北王思远耿斌全凤铃刘士枕
Owner LIAONING UNIVERSITY
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