Scheme 2.
Synthesis of [11C]FIMX via Pd-mediated 11C-carbonylation of 1-fluoro-4-iodobenzene followed by aminolysis of [11C]acylpalladium complex, and Boc deprotection. Conditions: (a) Mo, 875 °C; (b) THF, 130 °C, 4 min; (c) Bu3N, 80–110 °C, 6 min, evaporate to dryness; (d) HCl in THF, 100 °C, 1 min.