Synthesis of phenanthridines by radical C(aryl)-C(aryl) coupling

Ana M. Rosa, Ana M. Lobo, Paula S. Branco, Sundaresan Prabhakar, António M. D. L. Pereira

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51 Citations (Scopus)


Treatment of N-(o-bromobenzyl)anilines with 1-3 equivalent amounts of n-tributylinhydride, in the presence of 0.5 to 0.6 mol equiv. of AIBN, results in the formation of phenanthridines in good yields. The mechanism of the oxidation step is probed with a deuterated aniline derivative and azobiscyclohexylcarbanonitrile (ABCN) as the initiator. It is shown that the carbon centred radical derived from the latter does not act as the hydrogen abstracting species.

Original languageEnglish
Pages (from-to)269-284
Number of pages16
Issue number1
Publication statusPublished - 6 Jan 1997


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