Shifa Zhu, Xin Cui and X. Peter Zhang Ligand Effect on Cobalt(II)-Catalyzed Asymmetric Cyclopropanation with Diazosulfones – Approaching High Stereoselectivity through Modular Design of D2-Symmetric Chiral Porphyrins European Journal of Inorganic Chemistry 2012
Systematic studies of the ligand effect of CoII complexes of D2-symmetric chiral porphyrins on catalytic asymmetric cyclopropanation with diazosulfones are reviewed. Ligand structures have significantinfluence on both the reactivity and enantioselectivity of the reaction. Catalysts with rigidity have been shown to have high asymmetric induction.
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