Early View
Communication

Iridium‐Catalyzed Enantioselective Unbiased Methylene C(sp3)–H Borylation of Acyclic Amides

Yuhuan Yang

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

University of Chinese Academy of Sciences, Beijing, 100049 China

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Dr. Lili Chen

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

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Dr. Senmiao Xu

Corresponding Author

State Key Laboratory for Oxo Synthesis and Selective Oxidation, Center for Excellence in Molecular Synthesis, Suzhou Research Institute, Lanzhou Institute of Chemical Physics, Chinese Academy of Sciences, Lanzhou, 730000 China

Key Laboratory of Organosilicon Chemistry and Material Technology of Ministry of Education, Hangzhou Normal University, Hangzhou, 311121 China

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First published: 04 November 2020

Abstract

We herein report amide directed enantioselective β‐C(sp3)−H borylation of unbiased methylene C−H bonds of acyclic amides enabled by iridium catalysis for the first time. The key to the success of this transformation relies on the careful selection of the combination of iridium precursor and chiral bidentate boryl ligands. A variety of functional groups are well‐tolerated, affording chiral β‐functionalized amides in good to excellent enantioselectivities. We also demonstrate the application of the current method by stereospecific conversion of C−B bond into other functionalities.

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