Scheme 2.
Synthesis of soluble imine cages. a) DMF, 5 mol% TFA (per amine 7 a), 150 °C, 3d; b) a) DMF, 5 mol% TFA (per amine 7 a), 120 °C, 3d; c) THF, 2 mol% TFA (per amine 7 a), room temperature, 4d. R=n‐hexyl.
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