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2005
Enantioselective syntheses
O 0031
Furanoside Thioether—Phosphinite Ligands for Pd-Catalyzed Asymmetric AllylSubstitution Reactions. — The xylose-based compounds (I) are examined as
30- 034 ic
ligands in the palladium-catalyzed reactions of acetates (II) or (V) with malonate or an
amine. A strong dependence of the enantioselectivity on the substituent of (I) is observed. Best e.e. values are obtained for all reactions by use of ligand (Ia), whereas
ligand (Ic) affords the lowest selectivities. — (GUIMET, E.; DIEGUEZ*, M.; RUIZ,
A.; CLAVER, C.; Tetrahedron: Asymmetry 16 (2005) 5, 959-963; Dep. Quim. Fis.
Inorg., Univ. Rovira Virgili, E-43005 Tarragona, Spain; Eng.) — Klein
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