Abstract
A general synthesis of stable ortho-boropinacolato aryl and heteroaryl sulfonamides by directed ortho-metalation (DoM) and either MeOBPin or i-PrOBpin electrophile quench, 3 → 4, is described. A one-pot metalation-Suzuki cross-coupling procedure for the synthesis of biaryls and heterobiaryls, 3 → 5, and a complementary DoM-Ir-catalyzed boronation sequence (Scheme 6 ) are delineated.
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