Cyclopenta[l]phenanthrenyl and Cyclopenta[a]acenaphthylenyl Half-Sandwich Complexes of Ruthenium as Racemization Catalysts for Secondary Alcohols

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Publikationens författare: Mavrynsky D, Sillanpaa R, Leino R
Publiceringsår: 2009
Tidskrift: Organometallics
Tidskriftsakronym: ORGANOMETALLICS
Volym: 28
Nummer: 2
Artikelns första sida, sidnummer: 598
Artikelns sista sida, sidnummer: 605
Antal sidor: 8
ISSN: 0276-7333


Several half-sandwich complexes of ruthenium with cyclopenta[l]phenanthrenyl and cyclopenta[a]acenaphthylenyl ligands containing fused aromatic ring substituents on the cyclopentadienyl ring were prepared and characterized by NMR and X-ray crystallography. Activities of the complexes as racemization catalysts for secondary alcohols were preliminarily screened by using (S)-phenylethanol as the substrate. The catalytic activities of the fused-ring complexes depend strongly on the number of other substituents in the five-membered ring and are inferior to those reported earlier for chlorodicarbonyl(pentaphenylcyclopentadienyl)ruthenium, currently considered as the best catalyst candidate for dynamic kinetic resolution of secondary alcohols by combined enzyme/metal catalysis.

Senast uppdaterad 2020-07-04 vid 09:49