Iizumi K, Nakayama KP, Kato K, Muto K, Yamaguchi J. Synthesis and Properties of Pyridine-Fused Triazolylidene-Palladium: Catalyst for Cross-Coupling Using Chloroarenes and Nitroarenes.
J Org Chem 2022;
87:11909-11918. [PMID:
36001867 DOI:
10.1021/acs.joc.2c01562]
[Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
The synthesis and catalytic activity of pyridine-fused triazolylidene as a novel abnormal N-heterocyclic carbene (aNHC) ligand is described. The evaluation of physical properties using X-ray crystallographic analysis and infrared spectroscopy revealed that these triazolylidenes have a high electron-donating ability toward the metal center. The application of this triazolylidene to the palladium-catalyzed cross-coupling of chloroarenes and nitroarenes with arylboronic acids showcased its ability to activate C-Cl and C-NO2 bonds.
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