Optical resolution of tris(pentane-2,4-dionate) complexes of transition-metal ions
- 1 January 1977
- journal article
- research article
- Published by Royal Society of Chemistry (RSC) in J. Chem. Soc., Dalton Trans.
- No. 7,p. 702-704
- https://doi.org/10.1039/dt9770000702
Abstract
Optically pure Δ(–)[Cr(pd)3] and partly resolved [Ru(pd)3] with the Δ(+)isomer in excess are afforded by an asymmetric synthesis from the corresponding (+)-tartrate complex (pd = pentane-2,4-dionate). Complexes rac-[M(pd)3](M = CoIII, CrIII, RhIII, or RuIII) partition between diethyl (+)-tartrate and (–)-α-pinene with a partial resolution of the optical isomers, the Λ isomer being generally the more soluble in the ester layer. The optical isomers of [Rh(pd)3] have been obtained from the racemic complex through the optically enriched fractions provided by the differential partitioning.Keywords
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