Preparation and regioselective metalation of bis(trimethylsilyl)methyl-substituted aryl derivatives. 
A range of bis(trimethylsilyl)methyl-substituted aryl derivatives was prepared by using a Kumada-Corriu cross-coupling reaction.  The regioselective metalation of the resulting bis(trimethylsilyl)methyl-substituted aryl derivatives bearing this bulky silyl group allowed the generation of functionalized aromatics.  A regioselective switch in the presence or in the absence of the bis(trimethylsilyl)methyl group has been demonstrated.  Furthermore, this silyl group was converted into a formyl group or a styryl group, enhancing the scope of application of such bis(trimethylsilyl)methyl-substituted arenes.