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Method for producing glycine

一种制造方法、甘氨酸的技术，应用在有机化学方法、化学仪器和方法、有机化合物的制备等方向，能够解决工序数变多等问题，达到收率提高的效果

Active Publication Date: 2019-03-01
RESONAC CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, the hydantoin method has a problem that the number of steps increases

Method used

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  • Method for producing glycine
  • Method for producing glycine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0097] In a 15 mL glass pressure vessel with a stirrer bar added, CeO 2 0.5 g (concentration in liquid: 5.0 mass % with respect to aminoacetonitrile aqueous solution; 45 mass parts with respect to 100 mass parts of aminoacetonitrile (raw material)). 10.0 g of an aminoacetonitrile aqueous solution having a concentration of 11.0% by mass was added thereto. Furthermore, the pressure vessel was sealed, and it stirred at 70 degreeC for 1 hour. The pressure vessel was cooled to room temperature (25° C.), and the reaction liquid in the vessel was analyzed by HPLC.

Embodiment 2～7

[0099]Except having changed the reaction conditions in Example 1 to the conditions shown in following Table 1, it carried out similarly to Example 1, and reacted, and HPLC analysis of the reaction liquid was performed.

Embodiment 8

[0101] In a 15 mL glass pressure vessel with a stirrer bar added, CeO 2 0.5 g (concentration in liquid: 5.0 mass % with respect to aminoacetonitrile aqueous solution; 45 mass parts with respect to 100 mass parts of aminoacetonitrile (raw material)). To this, 28% of ammonia aqueous solution was added so that the liquid concentration of ammonia might become 10.0 mass %, and it prepared. Next, 10.0 g of an aqueous aminoacetonitrile solution having a concentration of 11.0% by mass was added. Furthermore, the pressure vessel was sealed, and it stirred at 70 degreeC for 1 hour. The pressure vessel was cooled to room temperature (25° C.), and the reaction liquid in the vessel was analyzed by HPLC.

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Abstract

Provided is a method for producing glycine with which it is possible to obtain glycine at a higher yield than with conventional methods, when glycine is synthesized from glycinonitrile. The method forproducing glycine is characterized in that glycine is obtained by reacting, in the presence of a cerium compound, glycinonitrile and water after further adding ammonia.

Description

technical field [0001] The present invention relates to a process for the manufacture of glycine from aminoacetonitrile. Background technique [0002] Glycine is one of the amino acids that constitute the basic unit of protein, also known as glycine. As an important intermediate of fine chemical products, it is widely used in the fields of pesticides, medicines, food, and feed. [0003] As its production method, in addition to the method of hydrolyzing natural protein, a chemical synthesis method, a fermentation method, and an enzymatic method are used. Among these methods, the so-called hydantoin method, the Strecker method, and the like are widely known as chemical synthesis methods. [0004] The hydantoin method is a method of synthesizing hydantoin by reacting hydrogen cyanide and ammonium carbonate with an aldehyde or ketone compound, and subjecting this to alkali hydrolysis to obtain glycine. When glycine is produced by this method, after alkali hydrolysis, it is nec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C07C227/26C07C229/08C07B61/00
CPCC07B61/00C07C227/18C07C229/08C07C227/26
Inventor 青木隆典涩谷彰小林孝充宫田英雄冢本真也桑岛学村井元纪
Owner RESONAC CORP
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