Sulfuric Acid → L-Methionine

HRID 224697Notes

Reaction equation

HRID 224697 reaction equation
[Na+].[NH2:2][C@H:3]([C:8]([O-:10])=[O:9])[CH2:4][CH2:5][S:6][CH3:7].S(=O)(=O)(O)O.[S]>>[NH2:2][C@H:3]([C:8]([OH:10])=[O:9])[CH2:4][CH2:5][S:6][CH3:7]

Participants

4

Reactant 3

HCID 1118Sulfuric AcidHCID 5362487SulfurHCID 2367272441442-22-22×

Product 1

HCID 6137L-Methionine

Conditions

Temperature
80 °C

Procedure

To 150 g of the aqueous solution of methionine sodium salt containing 8.0% by weight of methionine sodium salt, which was prepared by hydrolysis of MMH was added 9.4 g of 72% by weight of sulfuric acid, and the reducing sulfur compound as given in the following Table II. The mixture was stirred at 80° C. for 60 minutes, and concentrated with an evaporator. The precipitated crystals were collected and dried to give 8 g of colorless methionine.

Workup

  1. concentrationconcentrated with an evaporator
  2. customThe precipitated crystals were collected
  3. customdried

Sources & evidence

ORD record
ord-580c7ff697644948b6e6d19dd55962ab
Source dataset
uspto-grants-1980_11
Patent number
US04233461

Reaction notes

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