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ChemInform Abstract: Catalytic Enantioselective Addition of Enol Silanes to Ketomalonate Mediated by C2-Symmetric Bisoxazoline Lewis Acid Complexes.

✍ Scribed by Frank Reichel; Xiangming Fang; Sulan Yao; Marina Ricci; Karl Anker Joergensen

Publisher
John Wiley and Sons
Year
2010
Weight
35 KB
Volume
30
Category
Article
ISSN
0931-7597

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✦ Synopsis

Catalytic Enantioselective Addition of Enol Silanes to Ketomalonate Mediated by C 2 -Symmetric Bisoxazoline Lewis Acid Complexes. -A catalytic enantioselective addition reaction of silyl enol ethers to ketomalonate (II) in the presence of copper(II) bisoxazolines as catalysts is presented. The reaction is studied for different ligands and substrates under various reaction conditions and proceeds in good yields and ee's up to 93%. A procedure for the preparation of an optically active hydroxy acid (VI) is shown.

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