Schneider C, Broda E, Snieckus V. Directed ortho-metalation-cross-coupling strategies. One-pot Suzuki reaction to biaryl and heterobiaryl sulfonamides.
Org Lett 2011;
13:3588-91. [PMID:
21675709 DOI:
10.1021/ol201175g]
[Citation(s) in RCA: 28] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
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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