Organic/Fluorous Phase Extraction:  A New Tool for the Isolation of Organometallic Complexes

Autor: Spetseris, N., Hadida, S., Curran, D. P., Meyer, T. Y.
Zdroj: Organometallics; April 13, 1998, Vol. 17 Issue: 8 p1458-1459, 2p
Abstrakt: Strategies for isolating and purifying organometallic complexes are limited. The use of the unique solubility properties of fluorous reagents allows for purification by fluorous/organic phase extraction. An 85% yield of pure (Rfh)3SnCp* (1, Rfh = (CH2)2(CF2)5CF3) was isolated by filtration and extraction with FC-72 (fluorinated hexanes) of the reaction of (Rfh)3SnBr with Cp*Li. The reaction of 1 with TaCl5 and NbCl5 gave the alkylated products Cp*TaCl4 and Cp*NbCl4, respectively. These products were isolated from the reaction mixtures in good yields by simple extraction with a biphasic combination of FC-72 and a nonfluorinated solvent.
Databáze: Supplemental Index