2-AZA-?-ALLYLPALLADIUM COMPLEXES FOR THE SYNTHESIS OF β-CARBOXYASPARTIC ACID (ASA) DERIVATIVES
Reaction of malonate anions with Schiff base acetates (3) in the presence of a palladium catalyst yields protected derivatives of β-carboxyaspartic acid (5).
O'Donnell, Martin J.,Yang, Xiaobei,Li, Min
p. 5135 - 5138
(2007/10/02)
SYNTHESIS OF D,L-β-CARBOXYASPARTIC ACID FROM HYDANTOIN-5-MALONIC ACID DIETHYL ESTER
Hydantoin-5-malonic acid diethyl ester was synthesized by reduction of parabanic acid (oxalyl urea) to 5-hydroxy-hydantoin, conversion to 5-chlorohydantoin and condensation with malonic ester.Alkaline hydrolysis gave D,L-β-carboxyaspartic acid.
Henson, Edward B.,Gallop, Paul M.,Hauschka, Peter V.
p. 2561 - 2562
(2007/10/02)
The New Acid β-Carboxyaspartic Acid (Asa). Laboratory Synthesis and Identification in the Ribosomal Proteins of E. coli
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Christly, M. Robert,Barkley, Robert M.,Koch, Tad H.
p. 3935 - 3937
(2007/10/02)
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