Optically active C 3 -symmetric triarylphosphines in asymmetric allylations
作者:Mark T. Powell、Alexander M. Porte、Joe Reibenspies、Kevin Burgess
DOI:10.1016/s0040-4020(01)00346-5
日期:2001.6
routes involving asymmetric reduction of aryl ketones ( , and ). Single crystal X-ray structures of trans-PdCl2(phosphine)2 complexes of ligands 1a, 2a and 3a showed that the ligands do not adopt perfect C3-symmetric conformations in the solidstate; in fact, all three have one aromatic ring lying ‘face-on’ to the metal. Circular dichroism studies of the same complexes provided some evidence for an