Streamlined Electrochemical Dihalogenation (F, Cl, and Br) of gem‐Difluoroalkenes Using Hydrogen Halides as Reagents
摘要:
We established a straightforward electrochemical dihalogenation (F, Cl, and Br) process for gem‐difluoroalkenes. This reaction exhibits a broad functional group tolerance and has been effectively utilized in the construction of complex molecules. The subsequent synthetic transformations of the products have highlighted the adaptable nature of the dihalogenated compounds, demonstrating their potential application in drug discovery and the investigation of innovative materials. The effective utilization of the dihalogenated product for 18F‐labeling represents a novel approach in generating highly potent 18F‐labeled tracers.
which otherwise are essentially reluctant towards F‐nucleoplilic addition, now readily participate in this fluoroallylation reaction. Furthermore, this strategy provides an elegant example for the generation, as well as functionalization, of α‐CF3‐substituted benzylic radical intermediates using cheap and readily available starting materials.
Direct Vinylation and Difluorovinylation of Arylboronic Acids Using Vinyl- and 2,2-Difluorovinyl Tosylates via the Suzuki−Miyaura Cross Coupling
作者:Thomas M. Gøgsig、Lina S. Søbjerg、Anders T. Lindhardt、Kim L. Jensen、Troels Skrydstrup
DOI:10.1021/jo7027097
日期:2008.5.1
reaction conditions were developed for the Pd(0)-catalyzed Suzuki−Miyaura coupling reaction of aryl boronic acids with a simple electrophilic vinylation reagent, vinyl tosylate, providing access to styrene derivatives in good yields. The easilyaccessible vinyl tosylate represents a stable and less toxic alternative to the vinyl halides and the triflate/nonaflate derivatives. Furthermore, this methodology
申请人:GlaxoSmithKline Intellectual Property Development Limited
公开号:US20220112174A1
公开(公告)日:2022-04-14
This invention relates to novel compounds according to Formula (I) which are antagonists of MrgX2, to pharmaceutical compositions containing them, and to their use in therapy for the treatment of MrgX2-mediated diseases and disorders.
Cooperative Photoredox and N‐Heterocyclic Carbene Catalyzed Fluoroaroylation for the Synthesis of α‐Trifluoromethyl‐Substituted Ketones
作者:Xiaoye Yu、Anirban Maity、Armido Studer
DOI:10.1002/anie.202310288
日期:2023.11.27
An alternative disconnection approach for the construction of α-CF3 carbonyl compounds by using aroyl fluorides as bifunctional reagents for fluoroaroylation of gem-difluoroalkenes through cooperative photoredox and NHC catalysis is reported. The introduced strategy also provides rapid access to mono- or difluoroalkyl ketones.
Synthesis of α-Trifluoromethyl Alkynes through Fluoroalkynylation of <i>gem</i>-Difluoroalkenes
作者:Rui Chen、Dengyu Yin、Lishuai Lu、Xiao-Tian Feng、Yandong Dou、Yanwu Zhu、Shilu Fan
DOI:10.1021/acs.orglett.3c02512
日期:2023.10.13
trifluoromethylalkynylation reaction of gem-difluoroalkenes with alkynyl sulfoxide by photoredox radical addition with good functional group tolerance in moderate to high yields, is developed for the synthesis of α-trifluoromethyl alkyne. This reaction features simple operation and inexpensive raw materials and provides an expeditious route to synthesize biologically relevant fluorine-containing alkynyl compounds with