Salicylaldehyde and pyridoxal derivatives carrying optically active residue were applied for the derivation of Schiff base copper chelates from \(\alpha\)-amino acids. In aqueous media the chelate formation process proceeded spontaneously and the process was reversed by the addition of EDTA. Thus th
Gas chromatographic separation of diastereomeric esters of α-alkyl-α-amino acids on dimethylpolysiloxane
✍ Scribed by Hans Brückner; Matthias Langer
- Publisher
- Elsevier Science
- Year
- 1990
- Tongue
- English
- Weight
- 544 KB
- Volume
- 521
- Category
- Article
- ISSN
- 1873-3778
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Chromatographic separation of diastereomeric Schiff base copper(II), nickel(II), and zinc(II) chelates derived from optically active 3-substituted salicylaldehyde derivative and Ͱamino acids on a reverse-phase column was found to be successful. The separation of two elution peaks within a pair of en
Lanthanide ion-induced hydrolyses of methyl esters, ethyl esters, and amides of a-amino acids were systematically studied. In the hydrolysis of the alkyl esters, all the lanthanide ions are effective and the catalytic activities decrease in the order Ce(III), Nd(III) b Sm(III) b Eu(III) b Gd(III), C
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