(-)-Asparagine → Sodium Aspartate Succinimide
Reaction equation
[NH2:1][C@H:2]([C:7]([O-:9])=[O:8])[CH2:3][C:4]([O-:6])=[O:5].[Na+:10].[Na+].N[C@H:13]([C:18]([OH:20])=O)[CH2:14][C:15](=[O:17])[NH2:16].C1(=O)NC(=O)CC1>O>[NH2:1][C@H:2]([C:7]([O-:9])=[O:8])[CH2:3][C:4]([O-:6])=[O:5].[Na+:10].[Na+:10].[C:18]1(=[O:20])[NH:16][C:15](=[O:17])[CH2:14][CH2:13]1Participants
5
Reactant 3
Product 1
Reagents, catalysts & solvents 1
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 0.53:10.97 (asp:asn:suc). This terpolymer also was water-soluble.