Palladium catalyzed carbonylations of allyl phosphates and allyl acetates give β,γ-unsaturated esters efficiently. The latter reaction requires bromide ion as a co-catalyst.
zine ligands 2 were applied in asymmetric catalysis. Rhodium and copper complexes catalyzed the hydrosilylation of acetophenone and [4+2] cycloadditions with moderate enantioselectivity. Iridium complexes were used to hyrogenate di-, tri-, and tetrasubstituted alkenes, giving products with moderate to high enantiomer excesses. Enantioselective allylic substitution and Heckreactionscatalyzed by [
Matt, Peter von; Pfaltz, Andreas, Angewandte Chemie, 1993, vol. 105, # 4, p. 614 - 615
作者:Matt, Peter von、Pfaltz, Andreas
DOI:——
日期:——
Enantioselective allylic amination with chiral (phosphino-oxazoline)pd catalysts
作者:Peter von Matt、Olivier Loiseleur、Guido Koch、Andreas Pfaltz、Claudia Lefeber、Thomas Feucht、Gunter Helmchen
DOI:10.1016/0957-4166(94)80021-9
日期:1994.4
Chiral (phosphinophenyl-oxazoline)palladium complexes have been studied as enantioselective catalysts for allylic amination using benzylamine or the sodium salts of p-toluenesulfonamide, benzoylhydrazine, and (Boc)(2)NH as nucleophiles. In the reactions with 1,3-diphenyl- and 1,3-dialkyl-2-propenyl acetates, carbonates, or phosphates, moderate to high enantiomeric excesses of up to 97% have been obtained.