公开(公告)号：US20230135390A1

公开(公告)日：2023-05-04

申请号：US17908819

申请日：2021-02-25

Applicant: BASF SE

Inventor： Thomas SCHMIDT ,  Armin STAMM ,  Dan-Tam Daniel TANG ,  Nataliia SHYMANSKA ,  Verena MORMUL

IPC: C07C253/10

Abstract: A process for making a complexing agent with an enantiomeric excess of at least 60%, wherein said process comprises the following steps: (a) reacting an aqueous slurry of alanine with an enantiomeric excess of at least 60% with formaldehyde and hydrocyanic acid, thereby forming an aqueous solution of alanine-bisacetonitrile, (b) saponifying the alanine-bisacetonitrile from step (a) by combining the aqueous solution obtained in step (a) with an aqueous solution of alkali metal hydroxide.