Figure 4.

Time-course of the decay-corrected radiochemical yield (RCY) of [¹⁸F]2-fluorotoluene (△) and [¹⁸F]fluorobenzene (▼), and of the product selectivity (●), from the reaction of CA [¹⁸F]fluoride ion with (2-methylphenyl)(phenyl)iodonium chloride at 110 °C in DMF-0.25% H₂O, in the presence of K⁺-K 2.2.2. Reagents and K⁺-K 2.2.2 were each initially at 2.5 mM. The dashed line is the line of linear regression for the product selectivity data.