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Org Lett. 2000 Apr 20;2(8):1097-100.

Highly enantioselective Michael reactions catalyzed by a chiral quaternary ammonium salt. Illustration by asymmetric syntheses of (S)-ornithine and chiral 2-cyclohexenones.

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  • 1Department of Chemistry and Chemical Biology, Harvard University, Massachusetts 02138, USA.

Abstract

[formula: see text] The use of the chiral quaternary ammonium salts 1a and 1b makes possible enantioselective Michael reactions which have been applied to the asymmetric syntheses of (S)-ornithine (2) and the chiral 2-cyclohexenone 6.

PMID:
10804563
[PubMed - indexed for MEDLINE]
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