Related Experiment Videos
Discontinuous pressure effect upon enantiodifferentiating photosensitized isomerization of cyclooctene
Masayuki Kaneda1, Sadayuki Asaoka, Haruhiko Ikeda
1Department of Molecular Chemistry, Osaka University, 2-1 Yamada-oka, Suita 565-0871, Japan.
Chemical Communications (Cambridge, England)
|July 12, 2002
Abstract:
A hydrostatic pressure of up to 750 MPa induced discontinuous changes in the enantiomeric excess of the (E)-isomer obtained in the enantio-differentiating photoisomerization of (Z)-cyclooctene and (Z,Z)-cycloocta-1,5-diene, sensitized by chiral benzene-1,2,4,5-tetracarboxylates; indicating a switching of the enantio-differentiation mechanism, which is attributable to dramatic conformational changes of chiral alkoxycarbonyl auxiliaries at a specific pressure.