Pure Appl. Chem., 2004, Vol. 76, No. 3, pp. 537-540
doi:10.1351/pac200476030537
Negative nonlinear effect in aquo palladium catalysis depending on tropos biphenylphosphine ligand chirality controlled by chiral diaminobinaphthyl activator*
K. Mikami, K. Aikawa, and M. Yamanaka
Department of Applied Chemistry, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan
Abstract:
Asymmetric activation of aquo Pd catalysts with tropos biphenylphosphine (BIPHEP) ligands by a chiral diaminobinaphtyl (DABN) activator exhibits a remarkable negative nonlinear effect, (–)-NLE, with higher catalytic efficiency than that achieved by enantiopure atropos BINAP- or tropos BIPHEP-Pd catalysts without DABN activator.