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Convenient access to the enantiomerically pure rigid bidentate ligand (−)-[5-(diphenylarsino)-2,3-dimethyl-7-phenyl-7(S)-phosphabicyclo[2.2.1]hept-2-ene is established via an asymmetric [4 + 2] cycloaddition between diphenylvinylarsine and 1-phenyl-3,4-dimethylphosphole using the chiral organopalladium(II) complex containing ortho-metalated dimethyl[1-(2-naphthyl)ethyl]amine as the reaction promoter. The absolute configurations of the four newly generated stereocenters have been assigned by single-crystal X-ray analysis.

1994 stereochemistry stereochemistry (general, optical resolution) O 0030 50 -055 A Simple Route to an Enantiomerically Pure Diphosphine Ligand Containing a Phosphorus Stereogenic Centre. -The title ligand (V) is prepared via asymmetric Diels-Alder reaction between the alkene (II) and the phosphole (III) promoted by the complex (I). -(AW, B.-H.; LEUNG, P.-H.;