L-Aspartic acid, sodium salt (1:2) → Succinimide

HRID 2417019Notes

Reaction equation

HRID 2417019 reaction equation
[NH2:1][C@H:2]([C:7]([O-:9])=[O:8])[CH2:3][C:4]([O-:6])=[O:5].[NH4+:10].[NH4+].N[C@H:13]([C:18]([O-])=[O:19])[CH2:14][C:15]([O-])=[O:16].[Na+:21].[Na+]>>[NH2:1][C@H:2]([C:7]([O-:9])=[O:8])[CH2:3][C:4]([O-:6])=[O:5].[Na+:21].[Na+:21].[C:18]1(=[O:19])[NH:10][C:15](=[O:16])[CH2:14][CH2:13]1

Participants

4

Reactant 2

HCID 21806L-Aspartic acid, sodium salt (1:2)HCID 86590683Ammonium Aspartate

Product 2

HCID 11439SuccinimideHCID 21806L-Aspartic acid, sodium salt (1:2)

Procedure

The reactions and procedures of this Example were repeated, except that the monomer ratios of ammonium aspartate and sodium aspartate were adjusted (in part A) to produce a 1:2 copolymer of sodium aspartate and succinimide. A solution of this copolymer was titrated to pH 4.0 and ring-closed as above. The resulting terpolymer of sodium aspartate, asparagine, and succinimide had a residue ratio of 0.53:1:0.97 (asp:asn:suc). This terpolymer also was water-soluble.

Sources & evidence

ORD record
ord-46d967d4a41a4758b45274a7b9198cfc
Source dataset
uspto-grants-2004_11
Patent number
US06825313B2

Reaction notes

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