American Chemical Society
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Efficient Copper-Free PdCl2(PCy3)2-Catalyzed Sonogashira Coupling of Aryl Chlorides with Terminal Alkynes

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journal contribution
posted on 2006-03-17, 00:00 authored by Chenyi Yi, Ruimao Hua
Under copper-free conditions and with Cs2CO3 as a base, PdCl2(PCy3)2 showed high catalytic activity for cross-coupling of electron-rich, electron-neutral, and electron-deficient aryl chlorides with a variety of terminal alkynes in DMSO at 100−120 °C affording internal arylated alkynes in good to excellent yields.