Tartrate → Tartrate maleate

HRID 1086317

Reaction equation

[Ca].[C:2]([C@@H:5]([C@H:7]([C:9]([O-:11])=[O:10])[OH:8])[OH:6])([O-:4])=[O:3].[C:12]([O-:19])(=[O:18])/[CH:13]=[CH:14]\[C:15]([OH:17])=[O:16].[Na+]>>[C:2]([CH:5]([CH:7]([C:9]([O-:11])=[O:10])[OH:8])[OH:6])([O-:4])=[O:3].[C:12]([O-:19])(=[O:18])/[CH:13]=[CH:14]\[C:15]([O-:17])=[O:16]

Participants

Reactant 3

HCID 119400Tartrate

HCID 5460341Calcium

HCID 23665635Maleic acid, monosodium salt

Product 1

HCID 86744890Tartrate maleate

Procedure

In the production of HOPTC and DOOHC it is preferred that calcium D, L-tartrate and monosodium maleate slurry obtained from the tartrate/maleate removal step is added to the calcium maleate while heating to a boil at atmospheric pressure. The mixture is held at boiling for about 15 minutes to ensure conversion of all of the calcium carbonate to the maleate. The mixture is then charged to the synthesis reactor for the preparation of additional HOPTC and DOOHC. During transfer to the synthesis reactor water may be evaporated to reduce volume.

Sources & evidence

ORD record: ord-38ec9c37b90f45dca9a8e67f1d7bbc67
Source dataset: uspto-grants-1991_07
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05028723

Linked notes

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