70862-56-5Relevant academic research and scientific papers
Method for preparing 3-trifluoromethylisooxazole compound by one-pot
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Paragraph 0016; 0025, (2018/05/07)
The invention discloses a novel method for preparing a 3-trifluoromethylisooxazole compound by one-pot. According to the method, trifluoroethylamine which can be purchased in markets is prepared intofluorinated diazomethane, and then the fluorinated diazomethane and an alkynes compound are in coupled reaction under catalysis of low-price copper. The method is simple to operate, reaction conditions are mild, the cost is low, by-products are fewer, the yield is high, tolerance of a functional group is high, and reaction can be amplified. Meanwhile, much deeper mechanism study is carried out, and a mechanism that a trifluoromethyl ketoximes compound intermediate may be produced in the reaction is proposed.
Cu-Catalyzed Synthesis of Fluoroalkylated Isoxazoles from Commercially Available Amines and Alkynes
Zhang, Xiao-Wei,Hu, Wen-Li,Chen, Suo,Hu, Xiang-Guo
supporting information, p. 860 - 863 (2018/02/10)
A one-pot protocol for the construction of fluoroalkylated isoxazoles directly from commercially available amines and alkynes is described. The reaction is scalable, operationally simple, regioselective, mild, and tolerant of a broad range of functional groups. As such, it could be viewed as a click synthesis of fluoroalkylated isoxazoles. Preliminary mechanistic investigations reveal that the transformation involves an unprecedented Cu-catalyzed cascade sequence involving RfCHN2.
