N1-Functionalized Indole-Phosphane Oxazoline (IndPHOX) Ligands in Asymmetric Allylic Substitution Reactions
作者:Yu Wang、Matti J. P. Vaismaa、Kari Rissanen、Robert Franzén
DOI:10.1002/ejoc.201101540
日期:2012.3
IndPHOX ligands bearing various groups have been synthesized and the effects of the N1-substituent on the reaction rate, yield, and asymmetricinduction in a palladium-catalyzedallylicsubstitutionreaction are reported. The presence of an oxygen atom in the ligands, namely an N-MOM or N-THP group, led to enhancement of the enantioselectivity in the allylic amination reaction. In addition, a ligand with