Potassium Carbonate → HCID 131711322, compound

HRID 1703520Notes

Reaction equation

HRID 1703520 reaction equation
[C:1]([OH:9])(=[O:8])[C@H:2]([CH2:4][C:5]([OH:7])=[O:6])[OH:3].C(=O)([O-])[O-].[K+:14].[K+]>O>[C:1]([O-:9])(=[O:8])[C@H:2]([CH2:4][C:5]([OH:7])=[O:6])[OH:3].[K+:14]

Participants

4

Reactant 2

HCID 11430Potassium CarbonateHCID 222656L-Malic Acid

Product 1

HCID 131711322HCID 131711322, compoundYield 135.9%

Reagents, catalysts & solvents 1

HCID 962WaterSolvent

Conditions

Temperature
10 °C

Procedure

26.8 g (0.2 mole) of L-malic acid and 13.8 g (0.1 mole) of potassium carbonate are dissolved in 200 ml of water. The solution (pH 4.1) is concentrated under reduced pressure to make the total weight thereof 60 g. The concentrated solution is cooled to 10° C., and the mixture (i.e., the mixture of the concentrated solution and crystals precipitated) is stirred at the same temperature for 4 hours. After stirring, the mixture had a pH of 5.1. The crystalline precipitates are collected by filtration, washed with an aqueous 80% methanol solution, and dried at 35° C. in air for 16 hours. 23.4 g of monopotassium L-malate are obtained as crystals.

Workup

  1. concentrationThe solution (pH 4.1) is concentrated under reduced pressure
  2. additionthe mixture (i.e., the mixture of the concentrated solution and crystals
  3. customprecipitated)
  4. stirringAfter stirring
  5. customThe crystalline precipitates
  6. filtrationare collected by filtration
  7. washwashed with an aqueous 80% methanol solution
  8. customdried at 35° C. in air for 16 hours

Sources & evidence

ORD record
ord-3df7f33b39f443948fe1cf5de6098f81
Source dataset
uspto-grants-1978_11
Patent number
US04124636

Reaction notes

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