Directed <i>ortho</i>-Metalation–Cross-Coupling Strategies. One-Pot Suzuki Reaction to Biaryl and Heterobiaryl Sulfonamides
作者:Cédric Schneider、Ellen Broda、Victor Snieckus
DOI:10.1021/ol201175g
日期:2011.7.15
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 biaryis and heteroblaryls, 3 -> 5, and a complementary DoM-Ir-catalyzed boronation sequence (Scheme 6) are delineated.