2022
DOI: 10.1002/ejic.202200089
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Role of N, N′‐Diboryl‐4, 4′‐bipyridinylidene in the Transition‐Metal‐Free Borylation of Aryl Halides and Direct C−H Arylation of Unactivated Benzene

Abstract: Dedicated to Prof. Dr. Rainer Streubel on his 64 th birthday N,N'-Diboryl-4,4'-bipyridinylidene ( B BiPy) has been utilized in sub-stoichiometric amounts along with anionic base as one electron donor species for both transition metal-free borylation of aryl halides and arene CÀ H functionalization with aryl iodides for biaryl syntheses. Reaction between B BiPy and potassium tertbutoxide or methoxide has led to the formation of 4,4'bipyridine radical anion (BiPy •À ) with the release of an electron. The BiPy •À… Show more

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