PRODUCTION OF AMINOPOLYCARBOXYLIC ACIDS

Title:

PRODUCTION OF AMINOPOLYCARBOXYLIC ACIDS

Document Type and Number:

Japanese Patent JPH08337559

Kind Code:

A

Abstract:

PURPOSE: To obtain a high-purity aminopolycarboxylic acid having chelating ability, useful as a metal ion masking agent, excellent in biodegradability, in high yield.

CONSTITUTION: An aspartic acid or a glutamic acid is reacted with an aldehyde compound or an acetal compound and hydrogen cyanide or a cyanide in a solvent (e.g. water) in the presence of a base (e.g. NaOH) at 10-160°C for 1-24 hours to give a compound of the formula (R is an aliphatic hydrocarbon, an aryl or a heterocyclic; n is 1 or 2; M1 to M3 are each H or a cation). The amount of the aldehyde compound or the acetal compound used is 0.2-30mols based on 1mol of the aspartic acid or the glutamic acid and that of hydrogen cyanide or the cyanide is 0.2-30mols.

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JPS5919530	[Title of the Invention] Ester of N-substitution amino acid, or a manufacturing process of the acid addition salt
JPH0687806	NEW 2-AMINO-2-ETHYNYLMALONIC ESTER DERIVATIVE

Inventors:

OKADA HISASHI
INABA TADASHI
SUZUKI AKIRA

Application Number:

JP14594395A

Publication Date:

December 24, 1996

Filing Date:

June 13, 1995

Export Citation:

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Assignee:

FUJI PHOTO FILM CO LTD

International Classes:

C07C227/18; C07C229/24; (IPC1-7): C07C229/24; C07C227/18

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