Diastereomeric mixtures of the palladium, the platinum, and the rhodium complexes were prepared from [P(R,S),3R,4R,P′(R,S)]-3,4-bis(phenylphosphino)pyrrolidine (1a). The phosphorus atoms in bis[(P(R,S),3R,4R,P′(R,S))-1-(t-butoxycarbonyl)-3,4-bis(phenylphosphino)pyrrolidine-P,P′]dihalogenopalladium (2) can be alkylated stereoselectively with iodomethane. The PH bonds in 2 open epoxides, and add to
钯,
铂和
铑配合物的非对映异构体混合物是由[P(R,S),3 R,4 R,P'(R,S)]-3,4-双(
苯基膦基)
吡咯烷(1a)。双[(P(R,S),3 R,4 R,P'(R,S))-1-(叔丁氧羰基)-3,4-双(
苯基膦基)
吡咯烷-P,P中的
磷原子′]二卤化
钯(2)可以用
碘甲烷立体选择性地烷基化。2中的P inH键打开
环氧化物,并添加到Michael系统中,得到新的
配体,可以将其与
氰化物从
钯中分离出来。三种异构纯[(P - [R,3 - [R,4 - [R,P' - [R)(P小号,3 - [R,4 - [R,P'小号)(P - [R,3 - [R,4 - [R,P'小号)] - 1通过中性二
碘钯配合物制备了-(叔丁氧羰基)-3,4-双[(2-
氰乙基)
苯基膦基]
吡咯烷。[(P S,3 R,4 R,P 'S)1-(叔丁氧羰基)-3,4-双[(2-
氰乙基)
苯基膦基]
吡咯烷-P,P '] dii