96332-75-1Relevant academic research and scientific papers
Preparations of chiral pyrrolidinebisphosphines bearing two different types of phosphino groups and their use in efficient catalytic asymmetric hydrogenation
Morimoto,Takahashi,Achiwa
, p. 481 - 488 (2007/10/02)
Chiral pyrrolidinebisphosphine ligands, (2S-cis)-BCPM and (2S-cis)-BCPP, bearing two different types of phosphino groups, a dicyclohexylphosphino group and a diphenylphosphino group, were designed and prepared on the basis of our design concept for developing highly efficient ligands. The validity of the concept was confirmed experimentally in the asymmetric hydrogenation of ketopantolactone using neutral rhodium(I) complexes of BCPM. BCPP, BPPM, and BCCP. The rhodium(I) complex of (2S-cis)-BCPM was found to be the most effective catalyst (substrate/catalyst >ca. 104, >90% ee (R)).
Preparation of optically active peralkyldiphosphines and their use, as the rhodium(I) complex, in the asymmetric catalytic hydrogenation of ketones
Tani, Kazuhide,Suwa, Kenichi,Tanigawa, Eiji,Ise, Tomokazu,Yamagata, Tsuneaki,et al.
, p. 203 - 222 (2007/10/02)
Two types of the optically active peralkyldiphosphine, 2,3-O-isopropylidene-2,3-dihydroxy-1,4-bis(dialkylphosphino)butane (Rdiop 3) and N-(N'-substituted carbamoyl)-4-dicyclohexylphosphino-2-dicyclohexylphosphinomethylpyrrolidine (R-Cycapp 8), have been p
