Morja MI, Chikhalia KH. Palladium(0)-catalyzed aryne annulation: a powerful strategy for the synthesis of thio-bridged compounds.
Mol Divers 2023;
27:299-311. [PMID:
35451702 DOI:
10.1007/s11030-022-10424-6]
[Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/26/2021] [Accepted: 03/23/2022] [Indexed: 02/08/2023]
Abstract
A method for the construction of various thio-bridged compounds is developed using readily available o-(trimethylsilyl)aryl triflates as a source of aryne precursor, catalyzed by simple Pd(dba)2/dppe complex. This operationally simple and modular protocol allows thio-bridged compound via C(sp2)-C(sp2) and C(sp2)-C(sp3) bond formation in promising yields with a broad substrate scope. The key part is in situ generation of an aryne from o-(trimethylsilyl)aryl triflates and their subsequent intermolecular annulation.
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