Enantiomeric Resolution of Asymmetric-Carbon-Free Binuclear Double-Stranded Cobalt(III) Helicates and Their Application as Catalysts in Asymmetric Reactions
A series of double-stranded binuclear helicates [Co2(H1)2]4+, [Co2(H2)2]4+, and [Co2(H3)2]4+, derived from monodeprotonated bis-pyridyl hydrazine-based ligands of H21, H22, and H23 with one, two, and three -CH2 spacers, were obtained. These asymmetric-carbon-free racemic helicates were separated into their ΔΔ and ΛΛ enantiomers. The resolved helicates were examined for the first time as enantioselective catalysts in asymmetric benzoylation and nitroaldol reactions.
CCDC 1835264: Experimental Crystal Structure Determination
Related Article: Rajendran Arunachalam, Eswaran Chinnaraja, Arto Valkonen, Kari Rissanen, Shovan K. Sen, Ramalingam Natarajan, Palani S. Subramanian|2018|Inorg.Chem.|57|11414|doi:10.1021/acs.inorgchem.8b01204
CCDC 1832297: Experimental Crystal Structure Determination
Related Article: Rajendran Arunachalam, Eswaran Chinnaraja, Arto Valkonen, Kari Rissanen, Shovan K. Sen, Ramalingam Natarajan, Palani S. Subramanian|2018|Inorg.Chem.|57|11414|doi:10.1021/acs.inorgchem.8b01204