Glycolic Acid → HCID 21700893, compound

HRID 1597673Notes

Reaction equation

HRID 1597673 reaction equation
[C:1]1(=[O:7])[O:6][C:4](=[O:5])[CH:3]=[CH:2]1.[C:8]([OH:12])(=[O:11])[CH2:9][OH:10].[O-2:13].[La+3].[O-2].[O-2].[La+3].[OH-].[Na+:19]>O>[C:8]([CH2:9][O:10][CH:2]([CH2:3][C:4]([O-:13])=[O:5])[C:1]([O-:6])=[O:7])([OH:12])=[O:11].[Na+:19].[Na+:19].[Na+:19]

Participants

6

Reactant 4

HCID 757Glycolic AcidHCID 7923Maleic AnhydrideHCID 14798Sodium HydroxideHCID 150906Lanthanum sesquioxide

Product 1

HCID 21700893HCID 21700893, compound

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

An amount of 19.6 g of maleic anhydride was dissolved into 50 g of water. Then, 21.7 g of a 70 weight % aqueous glycolic acid solution and 1.6 g of lanthanum oxide (molar ratio to maleic anhydride: 0.025) were added thereto, and the resultant reaction liquid was stirred at room temperature until it became homogeneous. After this stirring, the pH of the reaction liquid was adjusted to 8.5 with sodium hydroxide to carry out a reaction at 80° C. for 10 hours. After the end of the reaction, the same operation as of Example 1 was carried out to obtain trisodium carboxymethoxysuccinate (CMOS-3Na) with a yield of 11.8 mol % (as based on the charged maleic anhydride) in the filtrate.

Workup

  1. customthe resultant reaction liquid
  2. customAfter this stirring, the pH of the reaction liquid
  3. customa reaction at 80° C. for 10 hours
  4. customAfter the end of the reaction

Sources & evidence

ORD record
ord-979ffb25923c4769bc3131a996b71155
Source dataset
uspto-grants-2001_09
Patent number
US06294693B1

Reaction notes

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