1,4'-Bi-1H-pyrazole, 5-(dicyclohexylphosphino)-1',3',5'-triphenyl-

1,4'-Bi-1H-pyrazole, 5-(dicyclohexylphosphino)-1',3',5'-triphenyl- 1g : Chiral phosphine-pyrazole ligand for Pd-catalyzed cross-coupling. Enhances selectivity and reactivity in sterically demanding asymmetric transformations.