Divergent Synthesis of Flavones and Flavanones from 2'-hydroxydihydrochalcones Palladium(ii)-catalyzed Oxidative Cyclization
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Divergent and versatile synthetic routes to flavones and flavanones efficient Pd(ii) catalysis are disclosed. These Pd(ii) catalyses expediently provide a variety of flavones and flavanones from 2'-hydroxydihydrochalcones as common intermediates, depending on oxidants and additives, discriminate oxidative cyclization sequences involving dehydrogenation, respectively, in a highly atom-economic manner.
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