Nickel-Catalyzed Cross-Coupling of Functionalized Difluoromethyl Bromides and Chlorides with Aryl Boronic Acids: A General Method for Difluoroalkylated Arenes
Transition‐metal‐catalyzed difluoroalkylation of aromatics remains challenging despite the importance of difluoroalkylated arenes in medicinal chemistry. Herein, the first successful example of nickel‐catalyzed difluoroalkylation of aryl boronic acids is described. The reaction allows access to a variety of functionalized difluoromethyl bromides and chlorides, and paves the way to highly cost‐efficient
A nickel-catalyzed cross-coupling of heteroaryl halides with chlorodifluoroacetamides and chlorodifluoroacetate has been developed. The synthetic simplicity from widely available fluorine sources and heteroaryl halides renders the protocol cost efficient synthesis of biologically active molecules, providing a facile route for applications in medicinal chemistry.
A cadmiumsulfide quantum‐dot‐photocatalyzed C(sp3)−Cl bond cleavage of ethyl chlorodifluoroacetate and cascade cyclization with unactivated olefins is described herein. This reaction provides a cost‐efficient method for synthesizing a wide range of CF2‐containing azaheterocycles from a variety of functionalized difluoromethyl chlorides. Furthermore, the results of a preliminary anti‐proliferative
Nickel-Catalyzed Reductive Dicarbofunctionalizations of Alkenes for the Synthesis of Difluorocarbonyl Oxindoles and Isoquinoline-1,3-diones
作者:Xuan Sha、Yini Fang、Tian Nie、Shiyu Qin、Yang Yang、Dechun Huang、Fei Ji
DOI:10.1021/acs.joc.2c02199
日期:——
efficient strategy for the construction of difluorocarbonyl-oxindole and difluorocarbonyl-isoquinoline-1,3-dione derivatives involving nickel-catalyzed intramolecular Heck-type cyclizations followed by intermolecular cross-couplings has been developed. This approach features high functional group tolerance, broad substrate scope, and operational simplicity under mild conditions, thus providing a new method
A Markovnikov-selective hydrodifluoromethylation of alkynes with BrCF2H via nickel catalysis is described, enabling straightforwardaccess to diverse branched CF2H-alkenes with high efficiency and excellent regioselectivity.