Table 4. Ortho-Iodination of Heterocyclic Compoundsa, b,c.
Ar = (4-CF3)C6F4.
Reaction conditions: 0.10 mmol substrate, 10 mol % Pd(OAc)2, 0.40 mmol I2, 0.24 mmol CsOAc, 0.10 mmol NaHCO3, 50 mg 4 Å molecular sieves and 2.0 mL of solvent in a sealed tube, 16-48 h.
Yields of the isolated product.
0.2 eq K2S2O8 was used in place of NaHCO3.