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Novel Chiral Oxazoline Ligands for Potential Charge‐Transfer Effects in the Rh(I)‐Catalysed Enantioselective Hydrosilylation
Author(s) -
Brunner Henri,
Störiko Reinhard,
Rominger Frank
Publication year - 1998
Publication title -
european journal of inorganic chemistry
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.667
H-Index - 136
eISSN - 1099-0682
pISSN - 1434-1948
DOI - 10.1002/(sici)1099-0682(199806)1998:6<771::aid-ejic771>3.0.co;2-y
Subject(s) - chemistry , oxazoline , hydrosilylation , enantioselective synthesis , rhodium , moiety , bipyridine , pyrazine , stereochemistry , medicinal chemistry , catalysis , organic chemistry , crystal structure
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.