Multinuclear Cu/Zn complex-catalyzed efficient asymmetric conjugateaddition of organozincreagents to acyclic and cyclic enones has been developed in the presence of a wide variety of regioisomeric chiral diols bearing phosphorus moieties as ligands. The regioisomeric SPINOL-PHOS ligands based on a SPINOL architecture showed an unexpected inversion of stereoselectivity.
BINAM-mono-PHOS as New Entry for Multinuclear Copper Catalysts in Asymmetric Conjugate Addition of Organozinc Reagents
作者:Kohei Endo、Takanori Shibata、Ryotaro Takayama
DOI:10.1055/s-0033-1338439
日期:——
BINAM-PHOS, participate in the copper-catalyzedasymmetricconjugateaddition of organozinc reagents to enones. The incorporation of benzoyl derivatives on nitrogen atoms was crucial to promote the reaction. Notably, BINAM-PHOS derivatives gave the opposite major enantiomers to that obtained using BINOL-PHOS derivatives, which we have developed for the construction of multinuclear catalysts.