A two-step synthesis of trimethyltribenzotriphenylene 2 from readily available starting materials involving three-fold Wittig reaction and three-fold oxidative photocyclization along a C3-symmetry path is reported. Flash vacuum pyrolysis of 2 in the quest for the triindenotriphenylene (hemifullerene) system has so far led only to the formation of mono-coupled products 6 and 7.
G. Mehta, G. V. R. Sharma, M. A. K. Kumar, T. V. Vedavyasa and E. D. Jemmis, J. Chem. Soc., Perkin Trans. 1, 1995, 2529 DOI: 10.1039/P19950002529
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