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. 2019 Dec 17;9:19299. doi: 10.1038/s41598-019-55992-0

Figure 2.

Figure 2

Reaction schemes. Synthesis of [123/125/127I]FITI and the negative control compound 4. Reaction conditions: (a) 2-fluoroethyl azide, CuI, NEt3, N-iodosuccinimide, MeCN, 3 h, r.t.; (b) 4 M HCl, MeCN, reflux, 1 h.; (c) [123/125I]NaI, bathophenanthroline/CuCl2, NEt3, 2-fluoroethyl azide, MeCN, 60 min, r.t.; (d) [125I]NaI, bathophenanthroline/CuCl2, 2-fluoroethyl azide, MeCN, 60 min, r.t.