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US 4,283,554 AGranted
Process for production of .beta.-chloroalanine
AssigneeShowa Denko K.K.
InventorsChozo Inoue, Soyao Moriguchi
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Abstract
A novel production process of .beta.-chloroalanine from chloroacetaldehyde is provided. In this process, a bisulfite or sulfite addition compound of chloroacetaldehyde is first reacted, in an aqueous solution, with ammonia and, then, reacted with hydrocyanic acid or a salt thereof. Thus, .alpha.-amino-.beta.-chloropropionitrile is formed. This .alpha.-amino-.beta.-chloropropionitrile is hydrolyzed under an acidic condition to form .beta.-chloroalanine.
Claims4
A process for preparing .beta.-chloroalanine comprising the steps of:
- (a) reacting an aqueous solution of a bisulfite or sulfite addition compound of chloroacetaldehyde with ammonia and, then, with hydrocyanic acid or a salt thereof, whereby .alpha.-amino-.beta.-chloropropionitrile is formed, and
- (b) hydrolyzing the resultant .alpha.-amino-.beta.-chloropropionitrile under an acidic condition.
Dependencies are inferred from the claim text.