## Abstract Complexation of amino acids as their sodium and potassium salts by optically active diaza crown ethers has been investigated in transport across bulk liquid membranes containing the carriers and in extraction experiments. The observed enantioselectivity was achieved by (noncovalent) ste
Reaction of potassium salts of boc amino acids with chloromethyl polystyrene catalyzed by 18-crown-6
β Scribed by Roger W. Roeske; Paul D. Gesellchen
- Publisher
- Elsevier Science
- Year
- 1976
- Tongue
- French
- Weight
- 258 KB
- Volume
- 17
- Category
- Article
- ISSN
- 0040-4039
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π SIMILAR VOLUMES
A practical synthesis of chiral amine precursors 3 and 4 and chiral diaza 18-crown-6 ethers 5, 6 and 7 starting from chiral amines are reported. The molecular recognition of these chiral crown ethers for amino acids potassium and sodium salts has been characterized by UV-vis. The selectivity order i
A number of amino acids and derivatives, bought or synthesized, were Ε½ . analyzed by capillary electrophoresis CE with optical active 18-crown-6-tetra-Ε½ . carboxylic acid 18C6H as chiral selector. Besides the primary interaction, i.e., 4 inclusion of the protonated primary amino function in the crow