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ChemInform Abstract: Asymmetric Michael Additions via 6- and 7-Membered Lactone SAMP-Hydrazones: Diastereo- and Enantioselective Synthesis of Substituted Lactone Esters.

✍ Scribed by D. Enders; Pascal Teschner; Robert Groebner; Gerhard Raabe

Publisher: John Wiley and Sons
Year: 2010
Weight: 31 KB
Volume: 30
Category: Article
ISSN: 0931-7597
DOI: 10.1002/chin.199924137

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✦ Synopsis

Asymmetric Michael Additions via 6-and 7-Membered Lactone SAMP-Hydrazones: Diastereo-and Enantioselective Synthesis of Substituted Lactone Esters. -High asymmetric inductions are achieved in the Michael addition of hydrazones (I) to α,β-unsaturated esters (II). Removal of the chiral auxiliary by ozonolysis provides the title lactone esters (IV) in high diastereo-and enantiomeric excesses. -(ENDERS, D.; TESCHNER,

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