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Togni reagent/PhIO-mediated one-pot synthesis of β-trifluoromethyl 2H-azirines. Reaction conditions: 1 (1.2 mmol), 5 (1.0 mmol), CuI (0.2 mmol), PhIO (1.5 mmol) in DCE (10 mL) unless otherwise stated. PhIO was added to the reaction mixture after the substrate 5 was completely consumed (TLC analysis). Yields refer to isolated yields.
