Zusammenfassung
The synthesis of new hydrolytically stable oxime ether ligands by condensation of various aldehydes with O-beta-D-glucopyranosylhydroxylamine 1 or O-beta-D-galactopyranosylhydroxylamine 4 is described. After peracetylation of the hydroxyl groups, ligands soluble in organic solvents were obtained. The ligands have been tested in transition metal-catalysed reactions. Phosphorus-containing ligands ...
Zusammenfassung
The synthesis of new hydrolytically stable oxime ether ligands by condensation of various aldehydes with O-beta-D-glucopyranosylhydroxylamine 1 or O-beta-D-galactopyranosylhydroxylamine 4 is described. After peracetylation of the hydroxyl groups, ligands soluble in organic solvents were obtained. The ligands have been tested in transition metal-catalysed reactions. Phosphorus-containing ligands gave high yields in palladium-catalysed allylic alkylation and rhodium-catalysed hydrosilylation reactions although the enantioselectivities were low. A 1,3-diphenylallyl-palladium(II) complex of ligand 2b was prepared and its structure was established by X-ray diffraction analysis. (C) 2003 Elsevier Science Ltd. All rights reserved.
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