Tetrahedron Letters p. 7589 - 7592 (1997)
Update date:2022-08-12
Topics:
Riviere, Pierre
Koga, Kenji
Protonation of prochiral lithium enolates (4), prepared from racemic 2-substituted-1- tetralones (2) via their silyl enol ethers (3), with excess succinimide in the presence of lithium bromide and 0.2 equivalent of a chiral tetradentate amine ((R)-1) in toluene at -78°C gave optically active 2 in up to 83% ee.
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