A neutral uranium dibenzyl complex mediated the CH activation of two aromatic N heterocycles, followed by a cascade of reactions which led to the opening and functionalization of imidazole rings (see scheme). This double CH activation and the sequence of transformations succeeding it are unique to uranium and point to the use of this element for the cleavage of other strong carbon–heteroatom bonds.
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Monreal et al. (2009) studied this question.
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