Naslov
Synthesis and characterization of chiral monodentate pseudo-peptide ligands and supramolecular asymmetric catalysis with their metal complexes

Autori
Kokan, Zoran ; Lataifeh, Anas ; Kraatz, Heinz-Bernhard ; Kirin, Srećko I.

Vrsta, podvrsta i kategorija rada
Sažeci sa skupova, sažetak, znanstveni

Izvornik
Programme and Abstract Book / - , 2010, P-51

Skup
International Symposium on "Molecular Coordination Chemistry"

Mjesto i datum
Mülheim, Njemačka, 07.11.2010. - 09.11.2010

Vrsta sudjelovanja
Poster

Vrsta recenzije
Međunarodna recenzija

Ključne riječi
monodentatni ligandi; supramolekularna kemija; asimetrična kataliza
(monodentate ligands; supramolecular chemistry; asymmetric catalysis)

Sažetak
In recent years, supramolecular catalysis has overlapped with many areas of synthetic, material and biological chemistry.[1, 2] It has been postulated that a supramolecular catalyst should contain a functional group for the catalysis and a motif for the assembly process via non-covalent interactions, i.e. π–π stacking, hydrogen bonding, electrostatic or van der Waals interactions. Supramolecular catalysis is particularly attractive because it often uses only simple monodentate ligands, easily accessible in a few synthetic steps. In the present work, chiral monodentate pseudo-peptide ligands L1 – L10 were prepared. The phosphorus donor atoms in L1 – L10 can bind transition metals like Rh(I), Pt(II) or Pd(II) with a 2 : 1 ligand to metal stoichiometry. In the resulting supramolecular L2M complexes, the pedant amino acids can form inter-strand hydrogen bonds, while the central aromatic unit can exhibit π – π stacking. Longer and/or branched amino acid chains in L6 – 10 allow the formation of more inter-strand hydrogen bonds and therefore stronger supramolecular interactions. The prepared metal complexes were characterized by various spectroscopic techniques and tested as catalysts in model asymmetric reactions.

Izvorni jezik
Engleski

Znanstvena područja
Kemija

POVEZANOST RADA