A Copper‐Catalyzed Sonogashira Coupling Reaction of Diverse Activated Alkyl Halides with Terminal Alkynes Under Ambient Conditions

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A Copper‐Catalyzed Sonogashira Coupling Reaction of Diverse Activated Alkyl Halides with Terminal Alkynes Under Ambient Conditions

Cao, Yu‐Xi; Dong, Xiao‐Yang; Yang, Jun; Jiang, Sheng‐Peng; Zhou, Shuangliu; Li, Zhong‐Liang; Chen, Guo‐Qiang; Liu, Xin‐Yuan

Advanced synthesis & catalysis, May 26, 2020, Volume: 362, Issue: 11

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We describe a copper‐catalyzed Sonogashira coupling reaction of alkyl halides with terminal alkynes under ambient conditions, efficiently providing a versatile tool for the construction of substituted alkynes. A new proline‐based N,N,P‐ligand is utilized to promote the transformation under a mild reaction condition. Diverse alkyl halides, such as primary and secondary (hetero)benzyl chlorides and bromides, secondary and tertiary α‐bromo amides and propargylic bromide, are applicable to provide a wide array of alkynes.

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