Self-assembly of an unpolar enantiomerically pure helicate-type metalla-cryptand.
Chiral tetraketone ligands are obtained by Claisen-type condensation of 4-bromoacetophenone with the acetone ketal of L-tartraic acid diethylester and lead with gallium(III) or iron(III) ions in self-assembly processes to dinuclear helicate-type cryptands which are able to bind lithium cations.
Institut für Organische Chemie der RWTH-Aachen, Professor-Pirlet-Strasse 1, D-52074 Aachen, Germany. markus.albrecht@oc.rwth-aachen.de
Markus
M
Albrecht
Sören
S
Schmid
Marita
M
deGroot
Patrick
P
Weis
Roland
R
Fröhlich