Ir(I)-catalyzed enantioselective hydrogenolysis of 3-aryl-3-hydroxyisoindolin-1-ones was written by Ge, Chen;Liang, Ren-Xiao;Liu, Ren-Rong;Xiang, Bin;Jia, Yi-Xia. And the article was included in Tetrahedron Letters in 2017.Reference of 133545-16-1 This article mentions the following:
An enantioselective hydrogenolysis of 3-aryl-3-hydroxyisoindolin-1-ones under H2 was developed by using Ir(I)/(R)-MeO-Biphep complex as a catalyst. Cyclic diaryl methylamides were obtained in moderate to excellent yields and up to 92% ee. In the experiment, the researchers used many compounds, for example, (R)-(6,6′-Dimethoxy-[1,1′-biphenyl]-2,2′-diyl)bis(diphenylphosphine) (cas: 133545-16-1Reference of 133545-16-1).
(R)-(6,6′-Dimethoxy-[1,1′-biphenyl]-2,2′-diyl)bis(diphenylphosphine) (cas: 133545-16-1) belongs to chiral phosphine ligands. Generally, the efficiency of nucleophilic phosphine catalysis often depends on the nature of the tertiary phosphine. Asymmetric catalytic performance is determined not only by the metal center but also by the chiral ligand selected.Reference of 133545-16-1
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis