Wada, Azusa; Noguchi, Keiichi; Hirano, Masao; Tanaka, Ken published the artcile< Enantioselective Synthesis of C2-Symmetric Spirobipyridine Ligands through Cationic Rh(I)/Modified-BINAP- Catalyzed Double [2 + 2 + 2] Cycloaddition>, HPLC of Formula: 139139-86-9, the main research area is bis diynenitrile rhodium chiral Segphos BINAP enantioselective double cycloaddition; sym spirobipyridine stereoselective preparation ligand; enantioselective double cycloaddition catalyst rhodium chiral Segphos BINAP.
Enantioenriched C2-sym. spirobipyridine ligands were efficiently synthesized through a cationic rhodium(I)/(R)-Segphos or (R)-H8-BINAP complex-catalyzed enantioselective intramol. double [2 + 2 + 2] cycloaddition of bis-diynenitriles.
Organic Letters published new progress about [2+2] Cycloaddition reaction, stereoselective ([2+2+2]). 139139-86-9 belongs to class chiral-phosphine-ligands, and the molecular formula is C44H40P2, HPLC of Formula: 139139-86-9.
Referemce:
Phosphine ligand,
Chiral phosphine ligands in asymmetric synthesis. Molecular structure and absolute configuration of (1,5-cyclooctadiene)-(2S,3S)-2,3-bis(diphenylphosphino)butanerhodium(I) perchlorate tetrahydrofuran solvate