Sulfuric Acid → HCID 86751627, compound

HRID 2294657Notes

Reaction equation

[NH2:1][C@H:2]([C:6]([OH:8])=[O:7])[CH:3]([CH3:5])[CH3:4].[CH2:9]([C:12]1[CH:17]=[CH:16][C:15]([S:18]([O-:21])(=[O:20])=[O:19])=[CH:14][CH:13]=1)[CH2:10][CH3:11].[Na+].S(=O)(=O)(O)O>O>[NH2:1][C@H:2]([C:6]([OH:8])=[O:7])[CH:3]([CH3:5])[CH3:4].[CH2:9]([C:12]1[CH:13]=[CH:14][C:15]([S:18]([O-:21])(=[O:19])=[O:20])=[CH:16][CH:17]=1)[CH2:10][CH3:11]

Participants

Conditions

Temperature: 10 °C

Procedure

To 15 g of L-valine were added 28.5 g of sodium p-n-propylbenzenesulfonate and 56.5 g of water. After the pH was adjusted to 1.5 with sulfuric acid, the mixture was dissolved at 50° C. Then, the solution was cooled to 10° C. to obtain 13 g of L-valine p-n-propylbenzenesulfonate. The analysis of the mother liquor revealed that the precipitation rate of valine was only 30%. The solubility of L-valine p-n-propylbenzenesulfonate in water at 10° C. (pH 1.5) was 29% by weight. The thus-obtained crystals were white fine crystals, the crystal system was a monoclinic system, and the specific gravity of the crystals was 1.27 g/cm3.

Workup

dissolutionthe mixture was dissolved at 50° C

Sources & evidence

ORD record: ord-1a4fca066a1c4cb592da5120c8fa4f75
Source dataset: uspto-grants-1997_11
DOI: 10.6084/m9.figshare.5104873.v1
Patent number: US05689001

Reaction notes

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