Cross dehydrogenative coupling via base-promoted homolytic aromatic substitution (BHAS): synthesis of fluorenones and xanthones
S Wertz, D Leifert, A Studer
Index: Wertz, Sebastian; Leifert, Dirk; Studer, Armido Organic Letters, 2013 , vol. 15, # 4 p. 928 - 931
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Citation Number: 71
Abstract
Cross dehydrogenative coupling reactions occurring via base-promoted homolytic aromatic substitutions (BHASs) are reported. Fluorenones and xanthones are readily prepared via CDC starting with readily available ortho-formyl biphenyls and ortho-formyl biphenylethers, respectively. The commercially available and cheap t BuOOH is used as an oxidant. Initiation of the radical chain reaction is best achieved with small amounts of FeCp2 (0.1 or ...
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