Stereoselective synthesis of β-fluorostyrene derivatives has been achieved. Selective isomerization of gem-bromofluoroalkenyl benzenes bearing various ortho-substituents is enabled by using Ir photocatalysts with high triplet energy. Subsequent one-pot transition-metal (TM)-catalyzed reactions enable pot-economical synthesis of monofluoroalkenes in a stereoselective manner.
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