Abstract
The synthesis of borylated organofluorines is of great interest due to their potential values as synthons in modular construction of fluorine-containing molecules. Reported herein is a rhodium-catalyzed hydroboration of aryl gem-difluoroalkenes leading to a series of α-difluoromethylated benzylborons. The use of cationic rhodium catalyst and a biphosphine ligand with large bite angle was crucial for reactivity by offering good regioselectivity and diminishing the undesired β-F elimination. Preliminary derivatizations of the products were conducted to showcase the utility of this protocol.
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