Table 1. Optimization of the Reaction Conditions^a.

entry	deviation from standard conditions	RCY (%)
1	none	46 ± 14n=4
2	DMF as solvent	44n=1
3	CHCl3 as solvent	40 n=1
4	50 °C instead of 80 °C	27n=1
5	9 μmol PhIO	16n=1
6	36 μmol PhIO	49n=1
7	1 μmol 3	32n=1
8	4 μmol 3	26n=1

^a[¹⁸F]TEAF was prepared with a NEt₄HCO₃ (9 mg) elution protocol. Bz: benzoyl. RCY: radiochemical yield, determined by radioHPLC analysis of the crude reaction mixture.