Temperature dependent reversal of enantiomer selectivity in the complexation of optically active phenolic crown ethers with chiral amines
- 1 January 1996
- journal article
- Published by Royal Society of Chemistry (RSC) in Chemical Communications
- No. 24,p. 2749-2750
- https://doi.org/10.1039/cc9960002749
Abstract
Phenolic crown ethers (S,S)-1, (R,R)-2, (S,S)-3 and (S,S)-4 were prepared in enantiomerically pure forms; the enantiomer selectivities of crown ethers (S,S)-1 and (R,R)-2 in complexation with 2-aminopropan-1-ol reversed at ca. 6 °C and increased with increasing temperature above the isoenantioselective temperature.Keywords
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