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CSJ Journals

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2017, Vol.46, No.2

218-220

Palladium-catalyzed Decarbonylative Alkynylation of Aromatic Esters

Toshimasa Okita ,1#Kazushi Kumazawa ,2#Ryosuke Takise ,2Kei Muto ,1Kenichiro Itami ,*2,3 and Junichiro Yamaguchi *1
1Department of Applied Chemistry, Waseda University, 3-4-1 Ohkubo, Shinjuku, Tokyo 169-8555
2Institute of Transformative Bio-Molecules (WPI-ITbM) and Graduate School of Science, Nagoya University, Chikusa, Nagoya, Aichi 464-8602
3JST-ERATO, Itami Molecular Nanocarbon Project, Nagoya University, Chikusa, Nagoya, Aichi 464-8602
https://doi.org/10.1246/cl.161001

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Abstract

A palladium-catalyzed decarbonylative alkynylation reaction of aromatic esters with terminal alkynes is reported. This reaction allows for halogen-free Sonogashira coupling, resulting in various aryl- and heteroarylalkynes. The utility of the reaction was demonstrated by orthogonal coupling reaction.

figure

A palladium-catalyzed decarbonylative alkynylation reaction of aromatic esters with terminal alkynes is reported. This reaction allows for a halogen-free Sonogashira coupling resulting in various aryl- and heteroarylalkynes. The utility of the reaction was demonstrated by orthogonal coupling reaction.

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