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- W2952202072 abstract "Tribenzodihydroacepentalenediide 5, a potential precursor for tribenzoacepentalene 6, can be prepared in good yields from the easily accessible centro-substituted tribenzotriquinacenes 7a-c by treatment with an excess of n-butyl lithium/potassium t-pentoxide in the presence of tetramethylethyIene diamine (TMEDA). The dieter 16 of tribenzodihydroacepentalene 15, thus obtained after hydrolysis of 5 in up to 85% yield from readily accessible 7a, undergoes [2+2]-cycloreversion at 220 °C, and 15 is efficiently trapped in [2+4]-cycloadditions with non-volatile dienes like tetracyclone and anthracene to give structurally interesting polycycles 17 and 18, respectively." @default.
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- W2952202072 date "1994-01-01" @default.
- W2952202072 modified "2023-10-12" @default.
- W2952202072 title "Facile Formation of Dihydroacepentalenediide from<i>centro</i>-Substituted Tribenzotriquinacenes with C-C Bond Cleavage" @default.
- W2952202072 doi "https://doi.org/10.1055/s-1994-22846" @default.
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