Zhang, Jinyu; Yan, Nuo; Ju, Cheng-Wei; Zhao, Dongbing published their research in Angewandte Chemie, International Edition in 2021. The article was titled 《Nickel(0)-Catalyzed Asymmetric Ring Expansion Toward Enantioenriched Silicon-Stereogenic Benzosiloles》.Reference of (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole The article contains the following contents:
The development of a straightforward strategy to obtain enantioenriched silicon-stereogenic benzosiloles remains a challenging yet appealing synthesis venture due to their potential future application in chiral electronic and optoelectronic devices. In this context, all of the existing methods rely on Rh-catalyzed systems and are somewhat limited in scope. Herein, we disclose the first Ni0-catalyzed ring expansion process that enables the preparation of benzosiloles possessing tetraorganosilicon stereocenters in excellent yields and enantioselectivities. The presented catalysis strategy is further applied to the asym. synthesis of silicon-stereogenic bis-silicon-bridged π-extended systems. Preliminary studies reveal that such compounds exhibit fluorescence emission, Cotton effects and circularly polarized luminescence (CPL) activity. After reading the article, we found that the author used (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole(cas: 210169-54-3Reference of (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole)
(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.Reference of (S)-5,5′-Bis(diphenylphosphino)-4,4′-bi-1,3-benzodioxole
Referemce:
Phosphine ligand,
Chiral phosphines in nucleophilic organocatalysis