BULLETIN OF THE
Communication
KOREAN CHEMICAL SOCIETY
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In conclusion, we synthesized a new palladium complex
utilizing a triNHC ligand. As the carbene coordination
increases, the electron-donating ability of the carbene
ligands increases, resulting in electron-rich palladium cata-
lysts. During α-ketoamide formation, electron-rich catalysts
are critical to promoting double carbonylation, as evidenced
by the results of the Pd(triNHC), Pd(biscarbene), and Pd-
phosphine-catalyzed reactions. In addition to the electronic
properties of the catalyst, the electronic properties of aryl
halide and amines affected the yield and selectivity of
α-ketoamides over amides.
Acknowledgments. This study was supported by National
Research Foundation Program (No. 2019R1A2C1084021)
by the Ministry of Science and ICT, Republic of Korea.
Supporting Information. Additional supporting informa-
tion may be found online in the Supporting Information
section at the end of the article.
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Bull. Korean Chem. Soc. 2021, Vol. 42, 492–494
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