L-Tartaric acid → 2,3-Dihydroxybutanedioic Acid

HRID 1402643Notes

Reaction equation

HRID 1402643 reaction equation
[C:1]([OH:10])(=[O:9])[C@@H:2]([C@H:4]([C:6]([OH:8])=[O:7])[OH:5])[OH:3]>O>[C@H:2]([OH:3])([C:1]([OH:10])=[O:9])[C@H:4]([OH:5])[C:6]([OH:8])=[O:7].[C:1]([OH:10])(=[O:9])[CH:2]([CH:4]([C:6]([OH:8])=[O:7])[OH:5])[OH:3]

Participants

4

Reactant 1

HCID 444305L-Tartaric acid2×

Product 2

HCID 8752,3-Dihydroxybutanedioic AcidHCID 447315Meso-Tartaric acid

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Procedure

To 40.126 kg of the reaction product of Example 4a, 15.241 kg of demineralized water and 3.00 kg of L-tartaric acid were added to get a clear solution with a meso-tartaric acid content of 66% of the total amount of tartaric acid. To 99.98 g of this mixture, 49.55 g of a 40 wt % FeCl3-solution in water were added. Using 16.6 g of a 50 wt % of sodium hydroxide solution in water, the pH was set to 4.35. Finally, 1163.6 g of demineralized water were added to obtain the desired final iron concentration.

Sources & evidence

ORD record
ord-f1c57385f56b4c1a80ecd3c35b95e796
Source dataset
uspto-grants-2014_12
Patent number
US08911796B2

Reaction notes

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