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Direct Synthesis of CF2H-Substituted 2-Amidofurans via Copper-Catalyzed Addition

Yongxiang Zheng, Anna Perfetto, Davide Luise, Ilaria Ciofini, and Laurence Miesch

ABSTRACT: The significance of molecules containing difluoromethyl groups is driven by their potential applications in pharmaceutical and agrochemical science. Methods for the incorporation of lightly fluorinated groups such as CF2H have been less well developed. Here we report the use of difluorinated diazoacetone as a practical reagent for the direct synthesis of CF2H-substituted 2-amidofurans through addition to ynamides. These newly designed difluorinated amidofurans were elaborated to create new nitrogen-containing frameworks that would be challenging to obtain otherwise.


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