Development of Asymmetric Nickel-Catalyzed Arylation of Aromatic Aldehydes with Arylboron Reagents

摘要

The development of the nickel-catalyzed 1,2-addition of triarylboroxins to aromatic aldehydes in the presence of a phosphine ligand is described. This development allowed the asymmetric nickel-catalyzed 1,2-addition of arylboron reagents to aromatic aldehydes. The enantioselectivity is synthetically acceptable (up to 81% ee) using 1-naphthaldehyde and 2-substituted aromatic aldehydes as substrates. The results have enantioselectivity comparable to the best results reported by us for the rhodium-catalyzed arylation of aromatic aldehydes.