2-Substituted 7-cycloalkenyl carbonates are suitable substrates for asymmetric allylic substitution reaction using 9-PBN coordinated palladium, producing the allylic substituted products with high enantiomeric excess. (C) 2001 Elsevier Science Ltd. All rights reserved.
A Pd-catalyzed asymmetric allylic amination using aspartic acid derived P-chirogenic diaminophosphine oxides (DIAPHOXs) is described. Asymmetric allylic amination of both linear and cyclic substrates proceeded at room temperature to give the chiral allylic amines in 72-99% ee.
Pd-catalyzed asymmetric allylic aminations with aromatic amine nucleophiles using chiral diaminophosphine oxides: DIAPHOXs
Asymmetric allylic aminations with aromatic amine nucleophiles using Pd-DIAPHOX catalyst systems are described. The asymmetric allylic aminations of various allylic carbonates proceeded using 2-5 mol % of the catalyst and BSA, providing the corresponding N-aryl chiral allylic amines in up to 99% ee for cyclic substrates, and in up to 97% ee for acyclic substrates. (C) 2008 Elsevier Ltd. All rights reserved.