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2005
Enantioselective syntheses
Enantioselective syntheses
O 0031
Catalytic Asymmetric Addition of β-Ketoesters to Various Imines by Using Chiral
Complexes. — A highly enantioselective catalytic Mannich reaction of
28- 026 Palladium
β-keto esters towards imines is described to afford β'-amino β-keto esters, e.g. (IV), in
good yields and high to excellent stereoselectivities. Imines derived from simple aromatic aldehydes, glyoxylate and α,β-unsaturated aldehydes are successfully applied.
Additionally, as the catalytic system tolerates water, a three-component condensation
is possible including the in situ generation of the imine. — (HAMASHIMA, Y.;
SASAMOTO, N.; HOTTA, D.; SOMEI, H.; UMEBAYASHI, N.; SODEOKA*, M.;
Angew. Chem., Int. Ed. 44 (2005) 10, 1525-1529; Inst. Multidisc. Res. Adv. Mater.,
Tohoku Univ., Aoba, Sendai 980, Japan; Eng.) — Mischke
2005
Enantioselective syntheses
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