Benzo [3, 4] cyclobuta [1, 2-b] biphenylene, the first member of a novel series of linear cyclobutadienoid acenes

…, GH Hovakeemian, KPC Vollhardt

文献索引：Berris, Bruce C.; Hovakeemian, George H.; Vollhardt, K. Peter C. Journal of the Chemical Society, Chemical Communications, 1983 , # 9 p. 502 - 503

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被引用次数: 8

摘要

Palladium mediated ethynylation of iodoarenes coupled with cobalt catalysed alkyne cotrimerisations allows rapid access to benzo[3,4]cyclobuta [I ,2-b] biphenylene, a linear biphenylenoid, and two of its trimethylsilyl derivatives. ... Prompted by a recent report on the low yielding synthesis of the title compound by the vacuum pyrolysis of benzodicinnolines,l we report an alternative, efficient, and short iterative approach to (1) (n = 1) and its derivatives, which is potentially ...