Preparative Organic Chemistry
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ChemInform Abstract: New Entry to Chiral Base Catalyst. Asymmetric Michael Addition of . alpha.-Substituted β-Keto Esters to Methyl Vinyl Ketone Catalyzed by Podand-Type Alkali Metal 2′-Substituted 1,1′-Binaphthalen-2-oxides.
First published: March 12, 1996
Abstract
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ChemInform Abstract
The title reaction is optimized with regard to alkali metal cations, reaction temp. and solvents, using the example of compound (IV). Only the asym. Michael reaction with the catalyst BINO gives the optically active adducts (III) and (V) quantitatively.
