Proline-Based P, N Ligands in Asymmetric Allylation and the Heck Reaction
作者:Scott R. Gilbertson、Dejian Xie、Zice Fu
DOI:10.1021/jo0158231
日期:2001.11.1
A series of phosphine-oxazoline ligands based on proline are reported. These ligands are synthesized from commercially available trans-4-hydroxy-L-proline in four steps. The ability of this type of ligand to catalyze allylic alkylation in an asymmetric fashion as well as the asymmetric Heck reaction is reported. The best of these ligands gave a palladium complex, which catalyzed the addition of dimethylmalonate