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Rapid Access to Acylation and Alkylation of N-Heteroarenes Using Ester Acetates as Reactants

Chemical Research in Chinese Universities 2024年第6期40卷 1212-1219页

作者： XU Jianxiong HUANG Weimin LI Jizhen College of Chemistry Jilin UniversityChangchun 130021P.R.China

The laboratory-abundant and low-toxic ethyl acetate was explored successfully for the first time as acyl group donor for the Minisci-type acylation of *** this approach,TBAC/K_(2)S_(2)O_(8) (TBAC: tert-butylacetyl chloride) system played a important role,and the introduced acyl group was derived from the alkoxyl group moiety of ester *** N-heteroarenes,such as quinoxaline and isoquinoline,*** also compatible to this synthetic strategy affording acylated products in high ***,the C_(2)—H alkylation was realized by accident for ***,the acylation mechanism was proposed through the chlorine radical abstracting the inactive α-hydrogen of the alkoxyl group.

关键词： Ethyl acetate Acylation chlorine radical N-Heteroarene Minisci-type

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Recent advances in FeCl_(3)-photocatalyzed organic reactions via hydrogen-atom transfer

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Chinese Chemical Letters 2024年第9期35卷 32-40页

作者： Xiao-Ya Yuan Cong-Cong Wang Bing Yu Green Catalysis Center College of ChemistryZhengzhou UniversityZhengzhou 450001China National Engineering Research Center of Low-Carbon Processing and Utilization of Forest Biomass Nanjing Forestry UniversityNanjing 210037China

In recent years,FeCl_(3)-photocatalyzed direct C–H/Si–H bond functionalization reactions have attracted huge *** those transformations,chlorine radical(Cl·)could be generated from FeCl_(3)via a ligandto-metal charge transfer(LMCT)/homolysis process under light *** resulting chlorine radical subsequently acts as a hydrogen atom transfer(HAT)agent to abstract the hydrogen atom of aliphatic C–H,O–H,or Si–H bonds to give the corresponding C/Si/O-centered radicals for various organic *** this review,we summarized the recent advances in the application of FeCl_(3)as a HAT photocatalyst for the C/Si–H functionalization to construct C–C,C–N,C–Si,C–S,C–B,and C-P bonds.

关键词： FeCl_(3) Photocatalysis Ligand-to-metal charge transfer Hydrogen atom transfer chlorine radical

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Photoelectrochemical Iron-Catalyzed C(sp^(3))-H Borylation of Alkanes in a Position-Selective Manner

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CCS Chemistry 2024年第6期6卷 1430-1438页

作者： Wen Wei Bin Wang Simon L.Homölle Jinbin Zhu Yanjun Li Tristan von Münchow Isaac Maksso Lutz Ackermann Institut für Organische und Biomolekulare Chemie Georg-August-Universität Göttingen37077 Göttingen

Catalytic C-H borylation is of prime topical importance,since easily available feedstock chemicals can thereby be transformed into valuable transient functional groups in the absence of directing ***,we disclose an iron-catalyzed C(sp^(3))-H borylation of simple,non-prefunctionalized alkanes,providing access to value-added products in a single step by means of *** power of merging photo-and electrochemistry was mirrored by ample scope and exceedingly mild reaction ***,an outstanding position-selectivity in favor of primary C(sp^(3))-H proved viable within the photoelectrochemical borylation through a chemo-selective anodic overoxidation *** ferro-photoelectrochemistry strategy avoids toxic precious transition metals,enabling C(sp^(3))-H borylations in a site-selective fashion.

关键词： photoelectrocatalysis C(sp^(3))-H borylation iron catalysis position-selectivity chlorine radical

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