Cutting carbon! A novel facile strategy for the CC bond cleavage of oxiranyl ketones has been developed. Carbophilic gold(I) activation of the alkyne side chain mediates a heterocyclization and subsequent CC bond cleavage (see scheme).
Enantiomerically pure tribenzotriquinacenes (TBTQs) bearing two monofunctionalized aromatic nuclei were synthesized for the first time and their optical properties and absolute configuration determined. A remarkably regioselective bis‐formylation of the fully bridgehead methylated parent TBTQ hydrocarbon with MeOCHCl2/TiCl4 afforded a mixture of two Cs‐symmetrical (achiral) difunctionalized derivatives...
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