Zhang Y, Li B, Liu SY. Pd-Senphos Catalyzed trans-Selective Cyanoboration of 1,3-Enynes.
Angew Chem Int Ed Engl 2020;
59:15928-15932. [PMID:
32511855 PMCID:
PMC7491284 DOI:
10.1002/anie.202005882]
[Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/23/2020] [Indexed: 12/25/2022]
Abstract
The first trans-selective cyanoboration reaction of an alkyne, specifically a 1,3-enyne, is described. The reported palladium-catalyzed cyanoboration of 1,3-enynes is site-, regio-, and diastereoselective, and is uniquely enabled by the 1,4-azaborine-based Senphos ligand structure. Tetra-substituted alkenyl nitriles are obtained providing useful boron-dienenitrile building blocks that can be further functionalized. The utility of our method has been demonstrated with the synthesis of Satigrel, an anti-platelet aggregating agent.
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