Scheme 393. Shape-Persistent Macrocycles Containing peri-Condensed Pyridine Rings.
Reagents and conditions: (a)331 NH4OAc, dioxane/mesitylene (1:4, v/v) 150 °C, 5 days; (b) R1-Br, NaH, THF, 65 °C, 2 days.
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