A new class of readily available and conformationally rigid phosphino-oxazoline ligands for asymmetric catalysis
作者:Duan Liu、Qian Dai、Xumu Zhang
DOI:10.1016/j.tet.2005.03.111
日期:2005.6
A new class of conformationally rigid phosphino-oxazoline ligands 3 were synthesized via an efficient ortho-substitution of phenyl glycinol as the key step. Divergent synthetic routes for easy ligand modulation, as well as a procedure suitable for scale-up synthesis, were established. The catalytic potential of ligands 3 has been demonstrated in the highly enantioselective Ir-catalyzed hydrogenation