208938-00-5Relevant academic research and scientific papers
Novel chiral oxazoline ligands for potential charge-transfer effects in the Rh(I)-catalysed enantioselective hydrosilylation
Brunner, Henri,Stoeriko, Reinhard,Rominger, Frank
, p. 771 - 781 (2007/10/03)
Novel 2-(4,4′-bipyridin-2-yl)oxazolines, bearing a chiral oxazoline moiety, were synthesised starting from 4,4′-bipyridine and selectively monomethylated in the N′-position. After coordination to rhodium these electron-poor ligands are supposed to exhibit charge-transfer effects with electron-donating substrates in the Rh(I)-catalysed enantioselective hydrosilylation (see next publication). Similar effects were expected from 4,4′-bipyridine- and pyrazine-bisoxazolines after complexation with rhodium. For comparison 2-(4-phenylpyridin-2-yl)oxazoline ligands were synthesised. Rh(I)-complexes of selected ligands were prepared and characterised, including an X-ray structure analysis.
