Streoselective reaction of (+/-)-7-Phenyldinaphthophosphole with an optically active palladium complex. Molecular structure and fluxional behavior of PdCl

Article abstract of DOI:10.1016/0022-328X(94)88077-8

Reaction of (+/-)-7-phenyldinaphtho<2,1-b;1',2'-d>phosphole (1) with one-half equivalent of an optically active palladium complex, (μ-Cl)>2 ((S)-3a), proceeded stereoselectively to give one of the diastereomers, Pd<(S)-C6H4CH(CH3)N(CH3)2><(P)-PPh(C20H12)>Cl ((S)(P)-4a), accompanying racemization of 1.The X-ray crystallographic analysis of (S)(P)-4a determined the absolute configuration of the coordinated phosphole unequivocally to be P.The fluxional behavior of 4a and the related complex is also discussed.Key words: Palladium; Phosphine; Fluxionality; Isomerism; Stereoselectivity; X-ray diffraction