Ir(COD)Cl] 2 /Tris(2,4-di- t -butylphenyl)phosphite-Catalyzed Addition Reactions of Arylboronic Acids with Aldehydes.

[Ir(COD)Cl]2 /tris(2,4-di- t -butylphenyl)phosphite-catalyzed addition reactions of arylboronic acids with aldehydes were described. The Ir(I) catalyst, generated from [Ir(COD)Cl]2 and tris(2,4-di- t -butylphenyl)phosphite, was an efficient catalyst system for the addition reactions of a variety of arylboronic acids with aromatic and aliphatic aldehydes. The easy availability of the catalyst and good yields make these reactions potentially useful in organic synthesis.