[NH2:1][CH:2]([CH2:6][CH3:7])[C:3]([OH:5])=[O:4].[C:8](OC(=O)C)(=[O:10])[CH3:9]>>[C:8]([NH:1][CH:2]([CH2:6][CH3:7])[C:3]([OH:5])=[O:4])(=[O:10])[CH3:9]163 g (1.58 mol) of 2-aminobutyric acid are reacted analogously to Example 1A with 242 g (2.37 mol) of acetic anhydride to give 2-(acetylamino)butanoic acid.
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