Br[CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([O:9]C)=[O:8].C[NH:12][CH2:13][C:14]([OH:16])=[O:15].[H-].[Na+]>>[C:14]([CH2:13][NH:12][CH2:2][CH2:3][CH2:4][CH2:5][CH2:6][C:7]([OH:9])=[O:8])([OH:16])=[O:15]In this reaction scheme, methyl 6-bromohexanoate is alkylated with methyl glycine in the presence of sodium hydride to afford the 6-[(carboxymethyl)amino]hexanoic acid. Treatment of 6-[(carboxymethyl)amino]hexanoic acid with sodium hydroxide affords the corresponding 6-[(carboxymethyl)amino]hexanoic acid disodium salt.
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