Journal
RUSSIAN CHEMICAL BULLETIN
Volume 53, Issue 7, Pages 1577-1583Publisher
SPRINGER
DOI: 10.1023/B:RUCB.0000046257.44290.84
Keywords
alpha-amino phosphonates; membrane transport; dicarboxylic acids; alpha-hydroxy carboxylic acids; synthetic receptors
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New alpha-amino phosphonates containing different alkyl and aryl substituents at the alpha-carbon atom were synthesized in high yields by the Kabachnik-Fields and Pudovik reactions. These compounds were studied as carriers of several alpha-hydroxy carboxylic and dicarboxylic acids through liquid impregnated membranes. These alpha-amino phosphonates studied are capable of molecular recognition of oxalic acid among structurally similar alpha-hydroxy carboxylic and dicarboxylic acids. The efficiency and selectivity of mass transfer of oxalic acid increase with an increase in the lipophilicity of the alpha-amino phosphonate.
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