Synthesis, characterization, and chirality of dimeric N-confused porphyrin-zinc complexes: Toward the enantioselective synthesis of bis(porphyrinoid) systems

(Figure Presented) A chiral bivalve: Upon insertion of zinc ions, the 3,3′-bis(N-confused porphyrin) adopts a bent transoid structure with homochiral subunits that are capable of the supramolecular binding of alcohols. The introduction of a dianionic ligand of defined configuration results in the racemic mixture being converted into a pure enantiomer (see picture; tart = tartrate dianion) as determined by circular dichroism studies. © 2007 Wiley-VCH Verlag GmbH & Co. KGaA.