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Phenylacetic acid recyclable synthesis catalyst

A catalyst, the technology of phenylacetic acid, is applied in physical/chemical process catalyst, organic compound/hydride/coordination complex catalyst, carbon monoxide reaction to prepare carboxylic acid, etc., can solve the problem of high production cost, easy poisoning and deactivation of catalyst, catalyst Recycling difficulties and other problems, to achieve the effect of reducing costs and being conducive to environmental protection

Pending Publication Date: 2021-10-29
四川信乙化工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The key to this method lies in the selection and recovery of the catalyst. The main catalyst used in China is cobalt carbonyl. Due to the many shortcomings of cobalt catalysts, such as: difficult recovery of catalysts, easy poisoning and deactivation of catalysts, high production costs, etc., domestic carbonylation process technology The production process of phenylacetic acid has been shut down or converted to production

Method used

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  • Phenylacetic acid recyclable synthesis catalyst
  • Phenylacetic acid recyclable synthesis catalyst
  • Phenylacetic acid recyclable synthesis catalyst

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026] like figure 1 Shown, the invention provides a kind of phenylacetic acid recyclable synthetic catalyst, and this chemical formula structure is:

[0027]

Embodiment 2

[0029] This scheme also provides a kind of preparation method of phenylacetic acid recyclable synthesis catalyst, comprises the steps:

[0030] (1) The copolymer (II) and Os(SPh3)4 are mixed in THF, and then hexane is added to obtain the coagulation of the mixture, wherein the reaction volume ratio is: copolymer (II):Os(SPh3)4:THF:hexane Alkane=10:1:3:4.

[0031] Reaction ratio: copolymer (II): Os(SPh3)4: THF: hexane 10:1:3:4

[0032]

[0033] Among them, x is 71, y is 8, z is 4, and w is 17.

[0034] (2) Filter the mixture, rinse the filtrate with 99.5% n-hexane at a concentration of 4 times the number of moles of the copolymer (II), and dry the filtrate;

[0035] (3) The filtrate is cross-linked for 2 hours at 120° and in a solvent-free state;

[0036] (4) Filtrate again, and the filtrate is rinsed with 99.5% THF of 2 times the number of moles of the copolymer (II), and then dried;

[0037] (5) the HSiCl of the concentration 99.5% of 1.5 times of molar number multipol...

Embodiment 3

[0040] Different from embodiment two, the chemical formula of copolymer (II) is:

[0041]

[0042] Among them, x is 70, y is 6, z is 3, and w is 16.

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Abstract

The invention discloses a phenylacetic acid recyclable synthesis catalyst. The chemical formula structure is shown in the specification. The phenylacetic acid recyclable synthesis catalyst designed by adopting the technical schemes can be recycled, so that the production cost is greatly reduced.

Description

technical field [0001] The invention relates to a catalyst used in the synthesis of phenylacetic acid, in particular to a recyclable synthesis catalyst of phenylacetic acid. Background technique [0002] Phenylacetic acid is an important intermediate of fine chemicals such as pharmaceuticals and spices, belonging to the category of fine chemicals. In medicine, phenylacetic acid is mainly used to produce penicillin, and is also used to prepare sedative and antidepressant amitriptyline, and epilepsy drug phenobarbital. In industry, phenylacetic acid is often used in the preparation of high-performance engineering plastic curing agents, fluorescent whitening agents, fuels, and display agents for photosensitive materials. In addition, in terms of spices, phenylacetic acid is an edible spice that is allowed to be used in my country, and is mainly used in the production of food, detergents, cleaning agents, cosmetics, tobacco, and beverages. [0003] There are dozens of syntheti...

Claims

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Application Information

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IPC IPC(8): B01J31/06C07C51/10C07C57/32
CPCB01J31/06C07C51/10C07C57/32Y02P20/584
Inventor 颜江
Owner 四川信乙化工有限公司
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