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Water-soluble cobalt phthalocyanine and synthesis method

A synthesis method and technology of cobalt phthalocyanine, which is applied in the field of synthesizing water-soluble cobalt phthalocyanine, can solve problems such as environmental pollution, equipment corrosion, and difficult purification, and achieve the effects of good solubility, easy separation, and good application prospects

Inactive Publication Date: 2016-02-03
LIAONING UNIVERSITY
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  • Application Information

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Problems solved by technology

At present, the only water-soluble phthalocyanines traditionally used are tetrasulfonic acid phthalocyanine and tetracarboxyl phthalocyanine, and these two phthalocyanines must be in the form of salt to dissolve in water, and acid must be added as raw materials during the synthesis process. Purification by acid solution method is difficult to purify. The use of acid will cause corrosion to the equipment and cause a certain degree of pollution to the environment.

Method used

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  • Water-soluble cobalt phthalocyanine and synthesis method
  • Water-soluble cobalt phthalocyanine and synthesis method
  • Water-soluble cobalt phthalocyanine and synthesis method

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Embodiment Construction

[0022] The synthesis of embodiment water-soluble cobalt phthalocyanine

[0023] 1. Synthesis of 4-chloroethoxyphthalonitrile

[0024] In a 100ml round-bottomed flask, add 1.73g (10mmol) 4-nitrophthalonitrile and 1.68g (20mmol) 2-chloroethanol, dissolve it in 50ml of freshly steamed DMF, and place under N 2 Under protection, after stirring at room temperature for 1 h, 2.76 g (20 mmol) of anhydrous potassium carbonate was added to the above solution five times within 2 h, and then the stirring reaction was continued for 36 h (TLC tracking detection end point). After the reaction, the mixture was poured into 300ml of ice water, and a milky white precipitate was precipitated, filtered, washed with deionized water until neutral, and dried to obtain a crude product, which was further separated and purified by silica gel column chromatography to obtain 1.29 g of a milky white powder. Yield 63%.

[0025] 2. N-methyl-N-(3,4-dicyanophenoxyethyl) imidazolium chloride

[0026] Add 0.74...

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Abstract

The present invention relates to a water-soluble cobalt phthalocyanine and a synthesis method. The technical scheme is as follows: the tetra-substituted imidazolium cation-containing water-soluble metal cobalt phthalocyanine is synthesized by cyclization by direct use of an imidazolium cation-containing phthalonitrile derivative as a precursor, by introduction of the imidazolium cation, the water-solubility of the cobalt phthalocyanine can be significantly increased, the manufacturing process needs no addition of an acid, acid digestion method is not needed in the purification process, equipment corrosion is avoided, and environmental pollution is reduced. The high-purity water-soluble cobalt phthalocyanine can be obtained by washing with a solvent.

Description

technical field [0001] The invention belongs to the field of chemical synthesis, in particular to a method for synthesizing water-soluble cobalt phthalocyanine. Background technique [0002] Cobalt phthalocyanine has become an important catalyst in many fields due to its unique high catalytic activity and selectivity. A large number of sulfur-containing by-products will be produced in industrial production, such as mercaptans, basic sulfides, basic sulfites and basic thiosulfates. The production of these compounds will cause water pollution. Metal phthalocyanines Due to its special structure, the derivatives have excellent catalytic oxidation properties, and are widely used as catalysts for oxidizing mercaptans and oil desulfurizers in petroleum processing. At present, the only water-soluble phthalocyanines traditionally used are tetrasulfonic acid phthalocyanine and tetracarboxyl phthalocyanine, and these two phthalocyanines must be in the form of salt to dissolve in water...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07D487/22
CPCC07D487/22
Inventor 张薇于媛媛佟健宋溪明
Owner LIAONING UNIVERSITY
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