Activation of Inter-element -Bonds by Transition-Metal Catalysts

Much attention has focused on activation of the interelement -bonds between main-group metal elements by trnsition-metal catalysts. Activation of silicon-silicon bond by palladium complexes was most extensively studied and applied to organic synthesis.[1] Moreover, silicon-tin,[2] boron-boron,[3] and boron-tin bonds [4] were found to undergo activation by transition-metal catalysts. Bis-metallation reactions were developed on the basis of the activation, leading to the synthesis of bis-metallated organic compounds, which are otherwise difficult to synthesize. Oxidative addition of the interelement -bonds onto transition metal complexes should be the key process of the activation.

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