Tetrahedron Letters p. 333 - 336 (1989)
Update date:2022-07-31
Topics:
Loupy, Andre
Sansoulet, Jean
Zaparucha, Anne
Merienne, Claude
Solid-liquid phase transfer catalysis (PTC) without added solvent efficiently promotes chiral Michael addition when the reaction is achieved in presence of quaternary salts derived from (+) or (-) N-methyl ephedrine. enantiomeric excesses are significantl
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