Scheme 2.
Synthesis of tin precursor 11 and radioiodinated compound [125I]10. (a) Dry dioxane, hexabutyldistannane, PdCl2(PPh3)2, 60 °C, 18 h; (b) [125I]NaI, acetic acid, NCS, 37 °C, 15 min.
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