Desaturation of N-acyl amidesa.
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Reaction conditions (Method A): reactions were conducted on a 0.4 mmol scale using 10 mol% FeCl2, 30 mol% NaI, 1.8 equiv. PIDA, 3.6 equiv. NaN3, in 4.0 mL EA, 80 °C, under an Ar atmosphere, and 12 h. Isolated yields.