Potassium Tartrate → L-Tartaric acid

HRID 372662

Reaction equation

[C:1]([C@@H:4]([C@H:6]([C:8]([O-:10])=[O:9])[OH:7])[OH:5])([O-:3])=[O:2].[Na+].[Na+].C([C@@H]([C@H](C([O-])=O)O)O)([O-])=O.[K+].[K+]>>[C:8]([OH:10])(=[O:9])[C@@H:6]([C@H:4]([C:1]([OH:3])=[O:2])[OH:5])[OH:7]

Participants

Reactant 2

HCID 8984Potassium Tartrate

HCID 162637Sodium Tartrate

Product 1

HCID 444305L-Tartaric acid

Procedure

The experiment of Example 5 was carried out by following the same procedure except for using an aqueous solution of potassium hydroxide in the place of the aqueous solution of sodium hydroxide. The substrate in the reaction mixture was wholly used up to produce potassium L(+)-tartrate. The amount of the product thus obtained was 1.61 g and the yield was 94 percent. Similarly to the sodium L(+)-tartrate of Example 1, this potassium L(+)-tartrate was treated to afford L(+)-tartaric acid. This acid was found to have an optical purity of 100 percent.

Workup

customThe amount of the product thus obtained

Sources & evidence

ORD record: ord-b3cb10ea5c594b69ba7e17308ae4d068
Source dataset: uspto-grants-1978_05
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US04092220

Linked notes

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