Development of asymmetric nickel-catalyzed arylation of aromatic aldehydes with arylboron reagents.

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

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