Figure 1.
Synthesis of precursor and radiolabeling. (A) Triethylamine, dichloromethane, 23°C, 2 h. (B) K2CO3, dimethylformamide, 95°C, 2 h. (C) Trifluoroacetic acid, dichloromethane, 23°C, 3 h. (D) [11C]CH3I, K2CO3, dimethylformamide, 95°C, 5 min.
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