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Production process of 2-amino-methyl-1-propanol

A production method, methyl technology, applied in the production field of 2-amino-2-methyl-1-propanol, can solve problems such as complex process conditions, long reaction time, complicated post-treatment, etc., and achieve simple process and low cost Low, high product yield effect

Inactive Publication Date: 2006-08-02
符爱清
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

The process conditions are complicated, the reaction time is long, the cost is high, the post-treatment is complicated, and the product purity is low

Method used

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  • Production process of 2-amino-methyl-1-propanol
  • Production process of 2-amino-methyl-1-propanol
  • Production process of 2-amino-methyl-1-propanol

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Embodiment Construction

[0012] A production method of 2-amino-2-methyl-1-propanol, comprising the following steps:

[0013] (1) Sodium nitrite is reacted with isopropanol and paraformaldehyde to generate 2-nitro-2-methyl-1-propanol, and the amount of paraformaldehyde is 1 to 5 times that of isopropanol (for example 1, 3, 5 times), the amount of sodium nitrite is 1 to 3 times the amount of paraformaldehyde (example 1, 2, 3 times). The reaction temperature is 0-25°C (eg 0°C, 15°C, 25°C), and the reaction time is 4-14 hours (eg 4, 10, 14 hours). The reaction formula is:

[0014]

[0015] After extraction with dichloromethane, it was washed with sodium carbonate solution and water until neutral, and the solvent was evaporated to obtain 2-nitro-2-methyl-1-propanol.

[0016] (2) React 2-nitro-2-methyl-1-propanol with hydrogen to generate 2-amino-2-methyl-1-propanol in the presence of catalyst ruthenium / molecular sieve, and the reaction temperature is 35 to 55 ℃ (example 35 ℃, 45 ℃, 55 ℃), reaction ti...

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Abstract

The present invention discloses one kind of production process of 2-amino-2-methyl-1-propanol. The production process includes the steps of: the reaction of sodium nitrite, isopropanol and polyformaldehyde to obtain 2-nitro-2-methyl-propanol crystal; and reaction of 2-nitro-2-methyl-propanol crystal and H2 to produce 2-amino-2-methyl-1-propanol. The production process is simple, easy in operation, and high in product purity, higher than 98 %.

Description

Technical field: [0001] The invention relates to a production method of 2-amino-2-methyl-1-propanol. Background technique: [0002] The production method of existing 2-amino-2-methyl-1-propanol adopts 2-nitropropanol to react with formaldehyde solution to generate 2-nitro-2-methyl-1-propanol, and then The hydrogenation reaction is carried out under the metal nickel catalyst to obtain the product. The process conditions are complicated, the reaction time is long, the cost is high, the post-treatment is complicated, and the product purity is low. Invention content: [0003] The object of the present invention is to provide a kind of technique simple, the production method of the 2-amino-2-methyl-1-propanol that is easy to operate. [0004] Technical solution of the present invention is: [0005] (1) Sodium nitrite is reacted with Virahol and paraformaldehyde to generate 2-nitro-2-methyl-1-propanol, and the reaction formula is: [0006] [0007] (2) 2-nitro-2-methyl-1-...

Claims

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Application Information

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IPC IPC(8): C07C213/02C07C215/08
Inventor 符爱清
Owner 符爱清
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