Figure 1

The scope of the reaction. Standard conditions: 0.7 mmol of amino acids (1a-1h), 0.5 mmol of 2a-2j, 0.1 mmol of I₂, 1 mmol of TBHP, 2 mL of DMA, were stirred at 25°C for 4 h then slowly raised to 60°C for 4 h. Catalysts amount and isolated yields were based on 2.