Enantioselective Reductive (Hetero)Arylation of Cyclic N-Sulfonyl Imines by Cobalt Catalysis. 2023

Jieshuai Xiao, and Minyan Wang, and Xuwen Yin, and Shuo Yang, and Pei Gu, and Xueli Lv, and Yue Zhao, and Zhuangzhi Shi
State Key Laboratory of Coordination Chemistry, Chemistry and Biomedicine Innovation Center (ChemBIC), School of Chemistry and Chemical Engineering, Nanjing University, Nanjing, 210093, China.

Transition-metal-catalyzed enantioselective addition of aryl organometallic reagents to imines has emerged as one of the most powerful tools for the formation of optically active diarylmethylamines. Here, we report the first asymmetric reductive (hetero)arylations of imines using aryl and heteroaryl halides enabled by a chiral cobalt-bisphosphine catalyst. This approach shows good functional group compatibility and complements the reported strategy without use of organometallic reagents. Mechanistic investigations supported that aryl-cobalt, instead of an arylzinc reagent, was formed in situ in this reductive aryl-addition event.

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