Caught in a trap! An S-heterocyclic carbene (SHC) with a cyclotetrasilane backbone is generated by a [2+3] cycloaddition of cyclotetrasilene with CS2 and trapped with C60 as a chemical probe. It is demonstrated that photolysis of anti-dodecaisopropyltricyclo[4.2.0.02,5]octasilane and CS2 in the presence of C60 affords a methanofullerene (see scheme).
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Nikawa et al. (2005) studied this question.
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