Silver (I) -catalyzed asymmetric Mukaiyama aldol reaction
Ohkouchi; Yamaguchi; Yamagishi
Enantiomer 5(1): 71-81
2000
ISSN/ISBN: 1024-2430 PMID: 10763871 Document Number: 517122
Cationic Ag(I)-BINAP complex has been shown to be an effective catalyst for Mukaiyama aldol reaction between aldehyde and silyl enol ether derivatives. AgPF6-BINAP is very active in this reaction and can achieve high enantiomeric excess under mild conditions. Addition of a small amount of water enhanced the reactivity to suggest the contribution of enolate anion intermediate. AgOAc-BINAP, which in noncationic species, showed an extraordinary high activity although %ee was low.
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