Chinese Journal of Catalysis ›› 2024, Vol. 59: 250-259.DOI: 10.1016/S1872-2067(23)64624-8

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Cobalt-catalyzed dehalogenative deuterations with D2O

Bing-Zhi Chena,b, Ding-Wei Jia,*(), Bo-Chao Zhoua,b, Xiao-Yu Wanga,b, Heng Liua,b, Boshun Wana, Xiang-Ping Hua,b,*(), Qing-An Chena,b,*()   

  1. aDalian Institute of Chemical Physics, Chinese Academy of Sciences, Dalian 116023, Liaoning, China
    bUniversity of Chinese Academy of Sciences, Beijing 100049, China
  • Received:2023-12-14 Accepted:2024-02-07 Online:2024-04-18 Published:2024-04-15
  • Contact: *E-mail: dingweiji@dicp.ac.cn (D.-W. Ji), xiangping@dicp.ac.cn (X.-P. Hu), qachen@dicp.ac.cn (Q.-A. Chen).
  • Supported by:
    The National Natural Science Foundation of China(22271277);The National Natural Science Foundation of China(21971234)

Abstract:

The regioselective incorporation of deuterium to organic skeletons has gained ever-growing attention among scientific community. Herein, we present a robust and general protocol for site-specific deuteration through the cobalt catalyzed dehalogenative process. Using D2O as the economical deuterium reagent, we achieved excellent substrate compatibility across a wide collection of organohalides or pseudo-halides, such as aryl, alkenyl, benzyl, allyl, or alkyl halides and propargyl acetates. Preliminary experimental evidences and related DFT calculation are also presented to support a mechanistic scenario involving a Co(I)-C(III)-Co(I) cycle. The generality and potential utilization of this moisture-insensitive catalysis have also been demonstrated by the selective deuterodehalogenation of drug-like candidates, concise synthesis of D-labeled pharmaceutical molecule, as well as the stepwise hydrogen isotope exchange of bioactive compounds.

Key words: Cobalt catalysis, Deuterodehalogenation, Site-specific deuteration, Organohalides, D-labeled pharmaceutical