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  • Title: A Germanium Catalyst Accelerates the Photoredox α-C(sp3)-H Alkylation of Primary Amines.
    Author: Sakai K, Oisaki K, Kanai M.
    Journal: Org Lett; 2022 May 13; 24(18):3325-3330. PubMed ID: 35486160.
    Abstract:
    Site-selective C(sp3)-H functionalizations using photoredox catalysis (PC) and hydrogen atom transfer (HAT) catalysis have received increasing attention. Here, we report a Ph2GeCl2 cocatalyst that greatly improves the yield of α-C(sp3)-H alkylation of primary amines catalyzed by a PC-HAT hybrid system. The α-position of the amino group selectively reacted even when weaker C-H bonds existed in the substrates. This finding may help the design of a novel site-selective hybrid catalysis.
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