15784-52-8Relevant articles and documents
Preparation method of alpha-ketovaline calcium and intermediate thereof
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Paragraph 0029; 0032; 0035; 0044, (2021/12/07)
The invention relates to a preparation method of alpha-ketovaline calcium and an intermediate thereof, the alpha-ketovaline calcium intermediate isopropylidene hydantoin is obtained from hydantoin and acetone under the catalysis of ammonia water, and the high-yield and high-purity isopropylidene hydantoin can be obtained without a post-treatment step of impurity removal. The alpha-ketovaline calcium is prepared from isopropylidene hydantoin, the alpha-ketovaline calcium with high yield and high purity can also be obtained, and the method is suitable for industrial large-scale production.