Methanol → Methyl Aminolevulinate Hydrochloride

HRID 1636627Notes

Reaction equation

HRID 1636627 reaction equation
[ClH:1].[NH2:2][CH2:3][C:4](=[O:10])[CH2:5][CH2:6][C:7]([OH:9])=[O:8].[CH3:11]O>Cl>[ClH:1].[NH2:2][CH2:3][C:4](=[O:10])[CH2:5][CH2:6][C:7]([O:9][CH3:11])=[O:8]

Participants

4

Reactant 2

HCID 887MethanolHCID 123608Aminolevulinic Acid Hydrochloride

Product 1

HCID 157921Methyl Aminolevulinate Hydrochloride

Reagents, catalysts & solvents 1

HCID 313Hydrochloric AcidCatalyst

Conditions

Temperature
60 °C

Procedure

To a 500 ml glass reactor containing 200 ml methanol, was added 1 g 5-amino-levulinic acid hydrochloride and 1 drop conc. HCl. The reaction mixture was then stirred overnight at 60° C. The progress of the esterification was followed by 1H-NMR. Excess methanol was removed by distillation, and the product further dried under vacuum at 30-40° C., giving methyl 5-aminolevulinate hydrochloride. The structure was confirmed by 1H-NMR in DMSO-d6.

Workup

  1. customExcess methanol was removed by distillation
  2. customthe product further dried under vacuum at 30-40° C.

Sources & evidence

ORD record
ord-b78187b10f084e62b5f25c2df9ee9b6d
Source dataset
uspto-grants-2000_03
Patent number
US06034267

Reaction notes

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