SDS of cas: 210169-54-3In 2019 ,《Catalytic Enantioselective Synthesis of Azepine-Fused Planar-Chiral Ferrocenes by Pt-Catalyzed Cycloisomerization》 appeared in Organometallics. The author of the article were Ito, Mamoru; Okamura, Moeka; Kanyiva, Kyalo Stephen; Shibata, Takanori. The article conveys some information:
Enantioselective synthesis of azepine-fused planar-chiral ferrocenes was achieved by the chiral cationic Pt-catalyzed intramol. cycloisomerization of N-propargyl-2-ferrocenylanilines. A mechanistic study using an N-allenyl analog indicated that the reaction proceeded selectively in a 7-exo-dig manner along with isomerization of the exo-olefin moiety. A methanesulfonylamino tether was crucial for selective cycloisomerization. This is the 1st example of the enantioselective synthesis of heteropin-fused planar-chiral ferrocenes. In the experiment, the researchers used (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3SDS of cas: 210169-54-3)
(S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3) may be used for: regio- and stereoselective preparation of axially chiral arylnaphthalene derivatives via rhodium-catalyzed [2+2+2] cycloaddition of diynes with naphthalenepropynoic acid derivatives or diastereo- and enantioselective hydrogenation of α-amino-β-keto ester hydrochlorides catalyzed by an iridium complex.SDS of cas: 210169-54-3
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis