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Synlett 1997; 1997(12): 1453-1455
DOI: 10.1055/s-1997-1061
DOI: 10.1055/s-1997-1061
letter
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Enantioselective Synthesis of Novel Enantiopure Phosphines via Reaction of a Tricarbonyl(η6-arene)chromium Complex with a Chiral Lithium Amide Base
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Publikationsverlauf
Publikationsdatum:
31. Dezember 2000 (online)
A range of novel phosphorus-containing tricarbonyl(η6-arene)chromium complexes has been synthesised via the enantioselective ortho-metallation approach using a chiral lithium amide base. Initial asymmetric reaction of a phosphine oxide complex allows the preparation of silyl- or stannyl-substituted products in ca. 73% ee, which then allows the preparation of other phosphine derivatives in very high ee (>95%) following phosphine reduction and enantiomeric enrichment.
tricarbonyl(η6-arene)chromium complex - phosphine - chiral lithium amide base