Chiral sulfideoxathiane ligands for palladium-catalyzed asymmetric allylic alkylation
摘要:
Easily prepared, chiral sulfideoxathiane ligands are described, which give excellent enantioselectivities (up to 99% ee) in the Pd-catalyzed allylic alkylation of 1,3-diphenyl-2-propenyl acetate with a range of alkyl malonate nucleophiles. (c) 2005 Elsevier Ltd. All rights reserved.
Novel and efficient chiral sulfideoxathiane ligands for palladium-catalyzed asymmetric allylic alkylationElectronic supplementary information (ESI) available: experimental details. See http://www.rsc.org/suppdata/cc/b2/b211031h/
Easily prepared, chiral sulfideoxathiane ligands are described which give excellent enantioselectivity (up to 99% ee) in the Pd-catalyzed allylic alkylation of 1,3-diphenyl-2-propenyl acetate with a range of alkyl malonate nucleophiles.
A set of chiral sulfinyl imine–thioether ligands are prepared via dehydration condensation of substituted benzaldehyde and chiral sulfinamide. The activity of these ligands in Pd-catalyzed asymmetric allylicalkylation reaction is studied, and the results indicate that the structure of sulfinamide motifs has an obvious effect on the e.r. value and yield. The chiral p-tolylsulfinamide derived ligands