Tsuchikama, Kyoji; Yoshinami, Yusuke; Shibata, Takanori published the artcile< Rhodium-complex-catalyzed [2+2+2] cycloaddition of diynes and carbonyl compounds>, Product Details of C44H40P2, the main research area is diyne carbonyl stereoselective cycloaddition rhodium BINAP catalyst; hydropyran stereoselective preparation electrocyclic ring opening; cyclopentene stereoselective preparation; hydropyrrole stereoselective preparation; hydrofuran stereoselective preparation.
A Rh-BINAP complex was used to catalyze the hetero-[2+2+2] cycloaddition of sym. 1,6-diynes and carbonyl moiety of keto esters, a diketone, and an aldehyde to give bicyclic α-pyrans, which were readily transformed into monocyclic compounds via the following electrocyclic ring opening. In the reaction of an unsym. 1,6-diyne and a 1,7-diyne, α-pyrans with a quaternary carbon stereocenter were obtained in moderate to excellent ee using a chiral rhodium catalyst.
Synlett published new progress about Alkadiynes Role: RCT (Reactant), RACT (Reactant or Reagent). 139139-93-8 belongs to class chiral-phosphine-ligands, and the molecular formula is C44H40P2, Product Details of C44H40P2.
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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