Amino acid complex and a method for optical resolution of a DL-a

Details Amino acid complex and a method for optical resolution of a DL-a Amino acid complex and a method for optical resolution of a DL-a

1984-07-10

1986-09-09

Trousof, Natalie

Chemistry of carbon compounds

Miscellaneous organic carbon compounds

C-metal

548496, 548498, 562401, C07C10350, C07B 5700

Patent

active

046108270

ABSTRACT:
A method for optical resolution of a DL-amino acid comprising reacting the DL-amino acid with an optically active N-acyl aspartic acid in a solvent or mixture of solvents, and separating the resulting two diasteromeric salts by way of the difference between their solubilities in the solvent or mixture of solvents. The difference in solubility may be enhanced by cooling, concentration, addition of a solubility-decreasing organic solvent, pH adjustment or salting out.

REFERENCES:
patent: 3991077 (1976-11-01), Uzuki et al.
patent: 4198524 (1980-04-01), Tashiro et al.
patent: 4224239 (1980-09-01), Tashiro et al.
patent: 4411840 (1983-10-01), Bethge et al.

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