Method for preparing N-carbamyl glutamic acid
A technology of carbamoylglutamic acid and glutamic acid, applied in the field of N-carbamylglutamic acid preparation, can solve problems such as insufficient synthesis amount, achieve the effects of no toxic side effects, reduce production costs, and simple process
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Embodiment approach 1
[0018] 1mol glutamic acid (glutamic acid), 1mol potassium cyanate (potassium cyanate), and 1mol potassium hydroxide (potassium hydroxide) were thoroughly mixed to obtain a mixture, the mixture was dissolved in 1L distilled water, at room temperature (20-25 ℃) ) for 16-20 hours to obtain a mixture solution, which was acidified with 80ml of concentrated hydrochloric acid, and then left to stand for 2-3 hours in 200ml of hydantoic acid, filtered, and recrystallized from water to separate out N-carbamide Acylglutamic acid.
Embodiment approach 2
[0020] 1.5mol glutamic acid (glutamic acid), 1.5mol potassium cyanate (potassium cyanate), and 1.5mol potassium hydroxide (potassium hydroxide) were thoroughly mixed to obtain a mixture, the mixture was dissolved in 1L distilled water, at room temperature (20 -25°C) for 16-20 hours to obtain a mixture solution, which was acidified with 100 ml of concentrated hydrochloric acid, and then placed in 200 ml of hydantoic acid for 2-3 hours, filtered, and recrystallized from water to precipitate N - carbamoylglutamic acid.
Embodiment approach 3
[0022] 1.2mol glutamic acid (glutamic acid), 1.2mol potassium cyanate (potassium cyanate), and 1.2mol potassium hydroxide (potassium hydroxide) were thoroughly mixed to obtain a mixture, the mixture was dissolved in 1L distilled water, at room temperature (20 -25°C) for 16-20 hours to obtain a mixture solution, which was acidified with 90ml of concentrated hydrochloric acid, and then placed in 200ml of hydantoic acid for 2-3 hours, filtered, and recrystallized from water to precipitate N-carbamylglutamic acid.
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