Palladium(II)- and rhodium(III)-catalyzed carbonylation reaction of aryltin compounds

A variety of aryltin compounds can be employed for carbonylation reactions in the presence of a catalytic amount of palladium(II) salt with reoxidant in acetonitrile or acetic acid under an atmospheric pressure of carbon mono xide (CO) to afford arenecarboxylic acids and diaryl ketones. Similar react ions also proceed by using rhodium(III) salt as a catalyst, where the prese nce of reoxidant is sometimes not necessary. More than one of two, three, o r four aryl groups of aryltin compounds, and almost all of them in some cas es, can be transferred to the products in this catalytic carbonylation.