80418-13-9Relevant articles and documents
Photochemical C-H Activation Enables Nickel-Catalyzed Olefin Dicarbofunctionalization
Campbell, Mark W.,Yuan, Mingbin,Polites, Viktor C.,Gutierrez, Osvaldo,Molander, Gary A.
, p. 3901 - 3910 (2021/04/06)
Alkenes, ethers, and alcohols account for a significant percentage of bulk reagents available to the chemistry community. The petrochemical, pharmaceutical, and agrochemical industries each consume gigagrams of these materials as fuels and solvents each year. However, the utilization of such materials as building blocks for the construction of complex small molecules is limited by the necessity of prefunctionalization to achieve chemoselective reactivity. Herein, we report the implementation of efficient, sustainable, diaryl ketone hydrogen-atom transfer (HAT) catalysis to activate native C-H bonds for multicomponent dicarbofunctionalization of alkenes. The ability to forge new carbon-carbon bonds between reagents typically viewed as commodity solvents provides a new, more atom-economic outlook for organic synthesis. Through detailed experimental and computational investigation, the critical effect of hydrogen bonding on the reactivity of this transformation was uncovered.
Trifluoromethyl reagent as well as synthesis method and application thereof
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Paragraph 0105-0109, (2022/01/08)
The invention discloses a trifluoromethyl reagent as well as a synthesis method and application thereof, wherein the structural formula of the trifluoromethyl reagent is as shown in formula I in the specification. According to the invention, diphenyl trifluoromethylphosphine and iodomethane are used as raw materials, and are heated in an organic solvent to carry out an addition reaction to prepare the trifluoromethylation reagent. The method is simple and convenient in process, high in yield and capable of realizing 10-gram-level large-scale preparation; more importantly, the trifluoromethylation reagent can be used as a free radical and a nucleophilic reagent to be applied to free radical addition reaction and simple nucleophilic addition reaction to prepare different types of trifluoromethylation products, so that the method has important application value.
One-Pot Successive Turbo Grignard Reactions for the Facile Synthesis of α-Aryl-α-Trifluoromethyl Alcohols
Kani, Ryunosuke,Inuzuka, Toshiyasu,Kubota, Yasuhiro,Funabiki, Kazumasa
supporting information, p. 4487 - 4493 (2020/06/01)
A novel straightforward one-pot methodology for two successive turbo Grignard reagent (iPrMgCl·LiCl) reactions, was developed for a facile synthesis of α-aryl-α-trifluoromethyl alcohols, motifs of value in pharmaceutical chemistry. The method displayed broad functional group tolerance, including reducible groups. Dual roles of iPrMgCl·LiCl were exploited in the tandem reaction with commercially available iodoarenes or iodoheteroarenes and 2,2,2-trifluoroethyl trifluoroacetate. The process encompasses three successive reactions in a one-pot process: the iPrMgCl·LiCl-mediated iodine/magnesium-exchange reaction of iodoarenes or iodoheteroarenes; nucleophilic addition of various generated aryl or heteroarylmagnesium reagents to 2,2,2-trifluoroethyl trifluoroacetate; and the reduction of in-situ generated aryl trifluoromethyl ketones with iPrMgCl·LiCl, to produce the corresponding α-aryl or α-heteroaryl-α-trifluoromethyl alcohols bearing various substituents, including reducible functional groups in good to excellent yields.