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Synthesis of acid addition salt of delta-aminolevulinic acid from 5-bromo levulinic acid esters

Patent ·
OSTI ID:958116

A process of preparing an acid addition salt of delta-aminolevulinc acid comprising: a) dissolving a lower alkyl 5-bromolevulinate and hexamethylenetetramine in a solvent selected from the group consisting of water, ethyl acetate, chloroform, acetone, ethanol, tetrahydrofuran and acetonitrile, to form a quaternary ammonium salt of the lower alkyl 5-bromolevulinate; and b) hydrolyzing the quaternary ammonium salt with an inorganic acid to form an acid addition salt of delta-aminolevulinic acid.

Research Organization:
National Renewable Energy Laboratory (NREL), Golden, CO
Sponsoring Organization:
United States Department of Energy
DOE Contract Number:
AC36-83CH10093
Assignee:
Midwest Research Institute (Kansas City, MO)
Patent Number(s):
6,583,317
Application Number:
US patent applciation 09/691,474
OSTI ID:
958116
Country of Publication:
United States
Language:
English

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